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Volumn 32, Issue 4, 2017, Pages 1713-1720

Effect of different connection schemes, terminating resistors & measurement impedances on the sensitivity of the FRA method

Author keywords

Fault diagnosis; Frequency response; Power transformer testing; Sensitivity; Transfer functions; Transformer windings

Indexed keywords

DEFORMATION; ELECTRIC TRANSFORMER TESTING; FAILURE ANALYSIS; FREQUENCY RESPONSE; POWER TRANSFORMERS; RESISTORS; SENSITIVITY ANALYSIS; TRANSFER FUNCTIONS; WINDING;

EID: 85021767914     PISSN: 08858977     EISSN: None     Source Type: Journal    
DOI: 10.1109/TPWRD.2016.2572160     Document Type: Article
Times cited : (50)

References (49)
  • 1
    • 84893796805 scopus 로고    scopus 로고
    • Ladder network parameters determination considering nondominant resonances of the transformer winding
    • Feb
    • M. Shabestary, A. Ghanizadeh, G. Gharehpetian, and M. Agha-Mirsalim, "Ladder network parameters determination considering nondominant resonances of the transformer winding, " IEEE Trans. Power Del., vol. 29, no. 1, pp. 108-117, Feb. 2014.
    • (2014) IEEE Trans. Power del , vol.29 , Issue.1 , pp. 108-117
    • Shabestary, M.1    Ghanizadeh, A.2    Gharehpetian, G.3    Agha-Mirsalim, M.4
  • 2
    • 84875656493 scopus 로고    scopus 로고
    • Current status and future trends in frequency-response analysis with a transformer in service
    • Apr
    • E. Gomez-Luna, G. A. Mayor, C. Gonzalez-Garcia, and J. P. Guerra, "Current status and future trends in frequency-response analysis with a transformer in service, " IEEE Trans. Power Del., vol. 28, no. 2, pp. 1024- 1031, Apr. 2013.
    • (2013) IEEE Trans. Power del , vol.28 , Issue.2 , pp. 1024-1031
    • Gomez-Luna, E.1    Mayor, G.A.2    Gonzalez-Garcia, C.3    Guerra, J.P.4
  • 3
    • 84901639985 scopus 로고    scopus 로고
    • Detection of failures within transformers by FRA using multiresolution decomposition
    • Jun
    • J. Gonzales Arispe and E. Mombello, "Detection of failures within transformers by FRA using multiresolution decomposition, " IEEE Trans. Power Del., vol. 29, no. 3, pp. 1127-1137, Jun. 2014.
    • (2014) IEEE Trans. Power del , vol.29 , Issue.3 , pp. 1127-1137
    • Arispe, J.G.1    Mombello, E.2
  • 4
    • 80054083071 scopus 로고    scopus 로고
    • Modeling power transformers to support the interpretation of frequency-response analysis
    • Oct
    • S. Mitchell and J. Welsh, "Modeling power transformers to support the interpretation of frequency-response analysis, " IEEE Trans. Power Del., vol. 26, no. 4, pp. 2705-2717, Oct. 2011.
    • (2011) IEEE Trans. Power del , vol.26 , Issue.4 , pp. 2705-2717
    • Mitchell, S.1    Welsh, J.2
  • 5
    • 77956989921 scopus 로고    scopus 로고
    • Mathematical comparison methods to assess transfer functions of transformers to detect different types of mechanical faults
    • Oct
    • E. Rahimpour, M. Jabbari, and S. Tenbohlen, "Mathematical comparison methods to assess transfer functions of transformers to detect different types of mechanical faults, " IEEE Trans. Power Del., vol. 25, no. 4, pp. 2544-2555, Oct. 2010.
    • (2010) IEEE Trans. Power del , vol.25 , Issue.4 , pp. 2544-2555
    • Rahimpour, E.1    Jabbari, M.2    Tenbohlen, S.3
  • 6
    • 67349089566 scopus 로고    scopus 로고
    • Interpretation of transformer FRA responses; part I: Influence of winding structure
    • Apr
    • Z. Wang, J. Li, and D. Sofian, "Interpretation of transformer FRA responses; part I: Influence of winding structure, " IEEE Trans. Power Del., vol. 24, no. 2, pp. 703-710, Apr. 2009.
    • (2009) IEEE Trans. Power del , vol.24 , Issue.2 , pp. 703-710
    • Wang, Z.1    Li, J.2    Sofian, D.3
  • 7
    • 77956988265 scopus 로고    scopus 로고
    • Interpretation of transformer FRA responses; part II: Influence of transformer structure
    • Oct
    • D. Sofian, Z. Wang, and J. Li, "Interpretation of transformer FRA responses; part II: Influence of transformer structure, " IEEE Trans. Power Del., vol. 25, no. 4, pp. 2582-2589, Oct. 2010.
    • (2010) IEEE Trans. Power del , vol.25 , Issue.4 , pp. 2582-2589
    • Sofian, D.1    Wang, Z.2    Li, J.3
  • 8
    • 77950189486 scopus 로고    scopus 로고
    • The influence of complex permeability on the broadband frequency response of a power transformer
    • Apr
    • S. Mitchell and J. Welsh, "The influence of complex permeability on the broadband frequency response of a power transformer, " IEEE Trans. Power Del., vol. 25, no. 2, pp. 803-813, Apr. 2010.
    • (2010) IEEE Trans. Power del , vol.25 , Issue.2 , pp. 803-813
    • Mitchell, S.1    Welsh, J.2
  • 9
    • 54049093947 scopus 로고    scopus 로고
    • High-frequency modeling of power transformers for use in frequency response analysis (FRA)
    • Oct
    • N. Abeywickrama, Y. Serdyuk, and S. Gubanski, "High-frequency modeling of power transformers for use in frequency response analysis (FRA), " IEEE Trans. Power Del., vol. 23, no. 4, pp. 2042-2049, Oct. 2008.
    • (2008) IEEE Trans. Power del , vol.23 , Issue.4 , pp. 2042-2049
    • Abeywickrama, N.1    Serdyuk, Y.2    Gubanski, S.3
  • 10
    • 12544255076 scopus 로고    scopus 로고
    • Fault diagnosis of a power transformer using an improved frequency-response analysis
    • Jan
    • J.-W. Kim, B. Park, S. C. Jeong, S. W. Kim, and P. Park, "Fault diagnosis of a power transformer using an improved frequency-response analysis, " IEEE Trans. Power Del., vol. 20, no. 1, pp. 169-178, Jan. 2005.
    • (2005) IEEE Trans. Power del , vol.20 , Issue.1 , pp. 169-178
    • Kim, J.-W.1    Park, B.2    Jeong, S.C.3    Kim, S.W.4    Park, P.5
  • 11
    • 0037396221 scopus 로고    scopus 로고
    • Transfer function method to diagnose axial displacement and radial deformation of transformer windings
    • Apr
    • E. Rahimpour, J. Christian, K. Feser, and H. Mohseni, "Transfer function method to diagnose axial displacement and radial deformation of transformer windings, " IEEE Trans. Power Del., vol. 18, no. 2, pp. 493-505, Apr. 2003.
    • (2003) IEEE Trans. Power del , vol.18 , Issue.2 , pp. 493-505
    • Rahimpour, E.1    Christian, J.2    Feser, K.3    Mohseni, H.4
  • 13
    • 84939786031 scopus 로고    scopus 로고
    • A study of the sweep frequency impedance method and its application in the detection of internal winding short circuit faults in power transformers
    • Aug
    • Y. Liu et al. et al., "A study of the sweep frequency impedance method and its application in the detection of internal winding short circuit faults in power transformers, " IEEE Trans. Dielectr. Elect. Insul., vol. 22, no. 4, pp. 2046-2056, Aug. 2015.
    • (2015) IEEE Trans. Dielectr. Elect. Insul. , vol.22 , Issue.4 , pp. 2046-2056
    • Liu, Y.1
  • 14
    • 84896282093 scopus 로고    scopus 로고
    • A new diagnostic method to support standard frequency response analysis assessments for diagnostics of transformer winding mechanical failures
    • Mar
    • D. Pham, T. Pham, H. Borsi, and E. Gockenbach, "A new diagnostic method to support standard frequency response analysis assessments for diagnostics of transformer winding mechanical failures, " IEEE Elect. Insul. Mag., vol. 30, no. 2, pp. 34-41, Mar. 2014.
    • (2014) IEEE Elect. Insul. Mag. , vol.30 , Issue.2 , pp. 34-41
    • Pham, D.1    Pham, T.2    Borsi, H.3    Gockenbach, E.4
  • 15
    • 84896299091 scopus 로고    scopus 로고
    • A new method for purposes of failure diagnostics and FRA interpretation applicable to power transformers
    • Dec
    • D. Pham, T. Pham, H. Borsi, and E. Gockenbach, "A new method for purposes of failure diagnostics and FRA interpretation applicable to power transformers, " IEEE Trans. Dielectr. Elect. Insul., vol. 20, no. 6, pp. 2026- 2034, Dec. 2013.
    • (2013) IEEE Trans. Dielectr. Elect. Insul , vol.20 , Issue.6 , pp. 2026-2034
    • Pham, D.1    Pham, T.2    Borsi, H.3    Gockenbach, E.4
  • 16
    • 77953330434 scopus 로고    scopus 로고
    • Transformer winding condition assessment using frequency response analysis and evidential reasoning
    • Mar
    • A. Shintemirov, W. Tang, and Q. Wu, "Transformer winding condition assessment using frequency response analysis and evidential reasoning, " IET Elect. Power Appl., vol. 4, no. 3, pp. 198-212, Mar. 2010.
    • (2010) IET Elect. Power Appl. , vol.4 , Issue.3 , pp. 198-212
    • Shintemirov, A.1    Tang, W.2    Wu, Q.3
  • 17
    • 84860853344 scopus 로고    scopus 로고
    • Transformer winding faults classification based on transfer function analysis by support vector machine
    • May
    • M. Bigdeli, M. Vakilian, and E. Rahimpour, "Transformer winding faults classification based on transfer function analysis by support vector machine, " IET Elect. Power Appl., vol. 6, no. 5, pp. 268-276, May 2012.
    • (2012) IET Elect. Power Appl , vol.6 , Issue.5 , pp. 268-276
    • Bigdeli, M.1    Vakilian, M.2    Rahimpour, E.3
  • 18
    • 84879247184 scopus 로고    scopus 로고
    • Application of characteristic impedance and wavelet coherence technique to discriminate mechanical defects of transformer winding
    • A. Ghanizadeh and G. Gharehpetian, "Application of characteristic impedance and wavelet coherence technique to discriminate mechanical defects of transformer winding, " Elect. Power Compon. Syst., vol. 41, no. 9, pp. 868-878, 2013.
    • (2013) Elect. Power Compon. Syst. , vol.41 , Issue.9 , pp. 868-878
    • Ghanizadeh, A.1    Gharehpetian, G.2
  • 19
    • 84908407037 scopus 로고    scopus 로고
    • Ann and cross-correlation based features for discrimination between electrical and mechanical defects and their localization in transformer winding
    • Oct
    • A. Ghanizadeh and G. Gharehpetian, "Ann and cross-correlation based features for discrimination between electrical and mechanical defects and their localization in transformer winding, " IEEE Trans. Dielectr. Elect. Insul., vol. 21, no. 5, pp. 2374-2382, Oct. 2014.
    • (2014) IEEE Trans. Dielectr. Elect. Insul , vol.21 , Issue.5 , pp. 2374-2382
    • Ghanizadeh, A.1    Gharehpetian, G.2
  • 20
    • 84923171863 scopus 로고    scopus 로고
    • Improved power transformer winding fault detection using FRA diagnostics-Part 1: Axial displacement simulation
    • Feb
    • N. Hashemnia, A. Abu-Siada, and S. Islam, "Improved power transformer winding fault detection using FRA diagnostics-Part 1: Axial displacement simulation, " IEEE Trans. Dielectr. Elect. Insul., vol. 22, no. 1, pp. 556-563, Feb. 2015.
    • (2015) IEEE Trans. Dielectr. Elect. Insul. , vol.22 , Issue.1 , pp. 556-563
    • Hashemnia, N.1    Abu-Siada, A.2    Islam, S.3
  • 21
    • 77956505964 scopus 로고    scopus 로고
    • Experimental and theoretical investigation of disc space variation in real high-voltage windings using transfer function method
    • Jul
    • E. Rahimpour and S. Tenbohlen, "Experimental and theoretical investigation of disc space variation in real high-voltage windings using transfer function method, " IET Elect. Power Appl., vol. 4, no. 6, pp. 451-461, Jul. 2010.
    • (2010) IET Elect. Power Appl , vol.4 , Issue.6 , pp. 451-461
    • Rahimpour, E.1    Tenbohlen, S.2
  • 22
    • 79958858543 scopus 로고    scopus 로고
    • A new method for detection and evaluation of winding mechanical faults in transformer through transfer function measurements
    • M. Bigdeli, M. Vakilian, and E. Rahimpour, "A new method for detection and evaluation of winding mechanical faults in transformer through transfer function measurements, " Adv. Elect. Comput. Eng., vol. 11, no. 2, pp. 23-30, 2011.
    • (2011) Adv. Elect. Comput. Eng. , vol.11 , Issue.2 , pp. 23-30
    • Bigdeli, M.1    Vakilian, M.2    Rahimpour, E.3
  • 23
    • 44949085479 scopus 로고    scopus 로고
    • Determination of axial displacement extent based on transformer winding transfer function estimation using vector-fitting method
    • P. Karimifard, G. Gharehpetian, and S. Tenbohlen, "Determination of axial displacement extent based on transformer winding transfer function estimation using vector-fitting method, " Eur. Trans. Elect. Power, vol. 18, no. 4, pp. 423-436, 2008.
    • (2008) Eur. Trans. Elect. Power , vol.18 , Issue.4 , pp. 423-436
    • Karimifard, P.1    Gharehpetian, G.2    Tenbohlen, S.3
  • 24
    • 84893184011 scopus 로고    scopus 로고
    • Algorithmic determination of pole-zero representations of power transformers transfer functions for interpretation of FRA data
    • presented at the, Johannesburg
    • M. Heindl, S. Tenbohlen, A. Kraetge, M. Kruger, and J. Velásquez, "Algorithmic determination of pole-zero representations of power transformers transfer functions for interpretation of FRA data, " presented at the 16th Int. Symp. High Voltage Eng., Johannesburg, 2009.
    • (2009) 16th Int. Symp. High Voltage Eng
    • Heindl, M.1    Tenbohlen, S.2    Kraetge, A.3    Kruger, M.4    Velásquez, J.5
  • 25
    • 50249181070 scopus 로고    scopus 로고
    • Application of numerical evaluation techniques for interpreting frequency response measurements in power transformers
    • Sep
    • P. Nirgude, D. Ashokraju, A. Rajkumar, and B. Singh, "Application of numerical evaluation techniques for interpreting frequency response measurements in power transformers, " IET Sci., Meas. Technol., vol. 2, no. 5, pp. 275-285, Sep. 2008.
    • (2008) IET Sci., Meas. Technol , vol.2 , Issue.5 , pp. 275-285
    • Nirgude, P.1    Ashokraju, D.2    Rajkumar, A.3    Singh, B.4
  • 26
    • 33744512353 scopus 로고    scopus 로고
    • A new method for comparing the transfer function of transformers in order to detect the location and amount of winding faults
    • E. Rahimpour and D. Gorzin, "A new method for comparing the transfer function of transformers in order to detect the location and amount of winding faults, " Elect. Eng., vol. 88, no. 5, pp. 411-416, 2006.
    • (2006) Elect. Eng , vol.88 , Issue.5 , pp. 411-416
    • Rahimpour, E.1    Gorzin, D.2
  • 28
    • 84894163365 scopus 로고    scopus 로고
    • Transformer frequency response analysis: Mathematical and practical approach to interpret mid-frequency oscillations
    • Dec
    • M. Bagheri, B. Phung, and T.Blackburn, "Transformer frequency response analysis: Mathematical and practical approach to interpret mid-frequency oscillations, " IEEE Trans. Dielectr. Elect. Insul., vol. 20, no. 6, pp. 1962- 1970, Dec. 2013.
    • (2013) IEEE Trans. Dielectr. Elect. Insul. , vol.20 , Issue.6 , pp. 1962-1970
    • Bagheri, M.1    Phung, B.2    Blackburn, T.3
  • 29
    • 14844334177 scopus 로고    scopus 로고
    • Investigations on sensitivity of FRA technique in diagnosis of transformer winding deformations
    • Sep
    • J. Jayasinghe, Z. Wang, P. Jarman, and A. Darwin, "Investigations on sensitivity of FRA technique in diagnosis of transformer winding deformations, " in Proc. IEEE Int. Symp. Elect. Insul., Sep. 2004, pp. 496-499.
    • (2004) Proc. IEEE Int. Symp. Elect. Insul , pp. 496-499
    • Jayasinghe, J.1    Wang, Z.2    Jarman, P.3    Darwin, A.4
  • 32
    • 79251591939 scopus 로고    scopus 로고
    • Case studies of factors influencing frequency response analysis measurements and power transformer diagnostics
    • Jan
    • A. Reykherdt and V. Davydov, "Case studies of factors influencing frequency response analysis measurements and power transformer diagnostics, " IEEE Elect. Insul. Mag., vol. 27, no. 1, pp. 22-30, Jan. 2011.
    • (2011) IEEE Elect. Insul. Mag , vol.27 , Issue.1 , pp. 22-30
    • Reykherdt, A.1    Davydov, V.2
  • 33
    • 84903154221 scopus 로고    scopus 로고
    • Influence of temperature and moisture content on frequency response analysis of transformer winding
    • Jun
    • M. Bagheri, B. Phung, and T. Blackburn, "Influence of temperature and moisture content on frequency response analysis of transformer winding, " IEEE Trans. Dielectr. Elect. Insul., vol. 21, no. 3, pp. 1393-1404, Jun. 2014.
    • (2014) IEEE Trans. Dielectr. Elect. Insul , vol.21 , Issue.3 , pp. 1393-1404
    • Bagheri, M.1    Phung, B.2    Blackburn, T.3
  • 34
    • 5044247505 scopus 로고    scopus 로고
    • Transformer winding movement monitoring in service-Key factors affecting FRA measurements
    • Sep
    • M.Wang, A.Vandermaar, and K. Srivastava, "Transformer winding movement monitoring in service-Key factors affecting FRA measurements, " IEEE Elect. Insul. Mag., vol. 20, no. 5, pp. 5-12, Sep. 2004.
    • (2004) IEEE Elect. Insul. Mag , vol.20 , Issue.5 , pp. 5-12
    • Wang, M.1    Vandermaar, A.2    Srivastava, K.3
  • 35
    • 47149102523 scopus 로고    scopus 로고
    • Effect of core magnetization on frequency response analysis (FRA) of power transformers
    • Jul
    • N. Abeywickrama, Y. Serdyuk, and S. Gubanski, "Effect of core magnetization on frequency response analysis (FRA) of power transformers, " IEEE Trans. Power Del., vol. 23, no. 3, pp. 1432-1438, Jul. 2008.
    • (2008) IEEE Trans. Power del , vol.23 , Issue.3 , pp. 1432-1438
    • Abeywickrama, N.1    Serdyuk, Y.2    Gubanski, S.3
  • 36
    • 33745584627 scopus 로고    scopus 로고
    • Exploring possibilities for characterization of power transformer insulation by frequency response analysis (FRA)
    • Jul
    • K. Abeywickrama, Y. Serdyuk, and S. Gubanski, "Exploring possibilities for characterization of power transformer insulation by frequency response analysis (FRA), " IEEE Trans. Power Del., vol. 21, no. 3, pp. 1375-1382, Jul. 2006.
    • (2006) IEEE Trans. Power del , vol.21 , Issue.3 , pp. 1375-1382
    • Abeywickrama, K.1    Serdyuk, Y.2    Gubanski, S.3
  • 37
    • 84966289931 scopus 로고    scopus 로고
    • Improving the numerical indices proposed for the FRA interpretation by including the phase response
    • Dec
    • M. H. Samimi, S. Tenbohlen, A. A. Shayegani-Akmal and H. Mohseni, "Improving the numerical indices proposed for the FRA interpretation by including the phase response, " Int. J. Elect. Power Energy Syst., vol. 83, no. C, pp. 585-593, Dec. 2016.
    • (2016) Int. J. Elect. Power Energy Syst , vol.83 , Issue.C , pp. 585-593
    • Samimi, M.H.1    Tenbohlen, S.2    Shayegani-Akmal, A.A.3    Mohseni, H.4
  • 38
    • 23944492606 scopus 로고    scopus 로고
    • Improved detection of power transformer winding movement by extending the FRA high frequency range
    • Jul
    • M. Wang, A. Vandermaar, and K. Srivastava, "Improved detection of power transformer winding movement by extending the FRA high frequency range, " IEEE Trans. Power Del., vol. 20, no. 3, pp. 1930-1938, Jul. 2005.
    • (2005) IEEE Trans. Power Del. , vol.20 , Issue.3 , pp. 1930-1938
    • Wang, M.1    Vandermaar, A.2    Srivastava, K.3
  • 39
    • 71049169725 scopus 로고    scopus 로고
    • Mechanical-condition assessment of transformer windings using frequency response analysis (FRA)
    • Apr
    • P. Picher et al., "Mechanical-condition assessment of transformer windings using frequency response analysis (FRA), " in CIGŔE Working Group A2.26, Apr. 2008.
    • (2008) CIGŔE Working Group A2.26
    • Picher, P.1
  • 40
    • 84877736543 scopus 로고    scopus 로고
    • Edition 1, IEC Standards, Iec60076- 18, 07 2012
    • Measurement of Frequency Response, Edition 1, IECStandards, Iec60076- 18, 07 2012.
    • Measurement of Frequency Response
  • 41
    • 33845661438 scopus 로고    scopus 로고
    • Winding movement in power transformers: A comparison of FRA measurement connection methods
    • Dec
    • J. Jayasinghe, Z. Wang, P. Jarman, and A. Darwin, "Winding movement in power transformers: A comparison of FRA measurement connection methods, " IEEE Trans. Dielectr. Elect. Insul., vol. 13, no. 6, pp. 1342- 1349, Dec. 2006.
    • (2006) IEEE Trans. Dielectr. Elect. Insul , vol.13 , Issue.6 , pp. 1342-1349
    • Jayasinghe, J.1    Wang, Z.2    Jarman, P.3    Darwin, A.4
  • 42
    • 84877744475 scopus 로고    scopus 로고
    • Understanding power transformer frequency response analysis signatures
    • May
    • A. Abu-Siada, N. Hashemnia, S. Islam, and M. Masoum, "Understanding power transformer frequency response analysis signatures, " IEEE Elect. Insul. Mag., vol. 29, no. 3, pp. 48-56, May 2013.
    • (2013) IEEE Elect. Insul. Mag , vol.29 , Issue.3 , pp. 48-56
    • Abu-Siada, A.1    Hashemnia, N.2    Islam, S.3    Masoum, M.4
  • 44
    • 80052862472 scopus 로고    scopus 로고
    • A probabilistic feature to determine type and extent of winding mechanical defects in power transformers
    • K. Pourhossein, G. Gharehpetian, E. Rahimpour, and B. Araabi, "A probabilistic feature to determine type and extent of winding mechanical defects in power transformers, " Elect. Power Syst. Res., vol. 82, no. 1, pp. 1-10, 2012.
    • (2012) Elect. Power Syst. Res , vol.82 , Issue.1 , pp. 1-10
    • Pourhossein, K.1    Gharehpetian, G.2    Rahimpour, E.3    Araabi, B.4
  • 48
    • 12544255076 scopus 로고    scopus 로고
    • Fault diagnosis of a power transformer using an improved frequency-response analysis
    • Jan
    • J.-W. Kim, B. Park, S. C. Jeong, S. W. Kim, and P. Park, "Fault diagnosis of a power transformer using an improved frequency-response analysis, " IEEE Trans. Power Del., vol. 20, no. 1, pp. 169-178, Jan. 2005.
    • (2005) IEEE Trans. Power del , vol.20 , Issue.1 , pp. 169-178
    • Kim, J.-W.1    Park, B.2    Jeong, S.C.3    Kim, S.W.4    Park, P.5
  • 49
    • 0034031330 scopus 로고    scopus 로고
    • Difference points in extractive and reactive cascades. II-generating design alternatives by the lever rule for reactive systems
    • J.W. Lee, S. Hauan, K. M. Lien, and A.W.Westerberg, "Difference points in extractive and reactive cascades. II-generating design alternatives by the lever rule for reactive systems, " Chem. Eng. Sci., vol. 55, no. 16, pp. 3161-3174, 2000.
    • (2000) Chem. Eng. Sci. , vol.55 , Issue.16 , pp. 3161-3174
    • Lee, J.W.1    Hauan, S.2    Lien, K.M.3    Westerberg, A.W.4


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.