-
1
-
-
3843106558
-
Observation of the two-dimensional plasmon in silica inversion layers
-
Allen S.J. Jr., Tsui D.C., Logan R.A. Observation of the two-dimensional plasmon in silica inversion layers. Phys. Rev. Lett. 38:1977;980-983
-
(1977)
Phys. Rev. Lett.
, vol.38
, pp. 980-983
-
-
Allen Jr., S.J.1
Tsui, D.C.2
Logan, R.A.3
-
2
-
-
0017542658
-
Two-dimensional magnetoplasmon in the silica inversion layer
-
Theis T.N., Kotthaus J.P., Stiles P.J. Two-dimensional magnetoplasmon in the silica inversion layer. Solid State Commun. 24:1977;273-277
-
(1977)
Solid State Commun.
, vol.24
, pp. 273-277
-
-
Theis, T.N.1
Kotthaus, J.P.2
Stiles, P.J.3
-
3
-
-
0019063012
-
Far infrared emission from plasma oscillations of Si inversion layers
-
Tsui D.C., Gornik E., Logan R.A. Far infrared emission from plasma oscillations of Si inversion layers. Solid State Commun. 35:1980;875-877
-
(1980)
Solid State Commun.
, vol.35
, pp. 875-877
-
-
Tsui, D.C.1
Gornik, E.2
Logan, R.A.3
-
4
-
-
0006666335
-
Cyclotron and plasmon emission from two-dimensional electrons in GaAs
-
Höpfel R., Lindemann G., Gornik E., Stangl G., Gossard A.C., Wiegemann W. Cyclotron and plasmon emission from two-dimensional electrons in GaAs. Surf. Sci. 113:1982;118-123
-
(1982)
Surf. Sci.
, vol.113
, pp. 118-123
-
-
Höpfel, R.1
Lindemann, G.2
Gornik, E.3
Stangl, G.4
Gossard, A.C.5
Wiegemann, W.6
-
5
-
-
0000342359
-
Plasmon and magnetoplasmon excitation in two-dimensional electron space-charge layers on GaAs
-
Batke E., Heitmann D., Tu C.W. Plasmon and magnetoplasmon excitation in two-dimensional electron space-charge layers on GaAs. Phys. Rev. B. 34:1986;6951-6960
-
(1986)
Phys. Rev. B
, vol.34
, pp. 6951-6960
-
-
Batke, E.1
Heitmann, D.2
Tu, C.W.3
-
7
-
-
0028397232
-
Dynamic response of parabolically confined electron systems
-
Wixforth A., Kaloudis M., Roche C., Ensslin K., Sunderam M., English J.H., Gossard A.C. Dynamic response of parabolically confined electron systems. Semicond. Sci. Technol. 9:1994;215-240
-
(1994)
Semicond. Sci. Technol.
, vol.9
, pp. 215-240
-
-
Wixforth, A.1
Kaloudis, M.2
Roche, C.3
Ensslin, K.4
Sunderam, M.5
English, J.H.6
Gossard, A.C.7
-
8
-
-
0001489195
-
Optical response of grating-coupler-induced intersubband resonances: The role of Wood's anomalies
-
Wendler L., Kraft T., Hartung M., Berger A., Wixforth A., Sundaram M., English J.H., Gossard A.C. Optical response of grating-coupler-induced intersubband resonances: The role of Wood's anomalies. Phys. Rev. B. 55:1997;2303-2314
-
(1997)
Phys. Rev. B
, vol.55
, pp. 2303-2314
-
-
Wendler, L.1
Kraft, T.2
Hartung, M.3
Berger, A.4
Wixforth, A.5
Sundaram, M.6
English, J.H.7
Gossard, A.C.8
-
9
-
-
0001055465
-
Sampling a THz dipole transition with sub-cycle time-resolution
-
Kersting R., Bratschitsch R., Strasser G., Unterrainer K., Heyman J.N. Sampling a THz dipole transition with sub-cycle time-resolution. Opt. Lett. 25:2000;272-274
-
(2000)
Opt. Lett.
, vol.25
, pp. 272-274
-
-
Kersting, R.1
Bratschitsch, R.2
Strasser, G.3
Unterrainer, K.4
Heyman, J.N.5
-
11
-
-
0032620310
-
Single-mode, single-lobe operation of surface-emitting, second-order distributed feedback lasers
-
Lopez J., Witjaksono G., Botez D. Single-mode, single-lobe operation of surface-emitting, second-order distributed feedback lasers. Appl. Phys. Lett. 75:1999;885-887
-
(1999)
Appl. Phys. Lett.
, vol.75
, pp. 885-887
-
-
Lopez, J.1
Witjaksono, G.2
Botez, D.3
-
12
-
-
0029323017
-
New complex-coupled DFB-laser with a contacted surface grating for λ=1.55 μm
-
Rast A., Johannes T.W., Harth W., Franz G. New complex-coupled DFB-laser with a contacted surface grating for. λ=1.55 μm IEE Proc. Optoelectron. 142:1995;162-164
-
(1995)
IEE Proc. Optoelectron.
, vol.142
, pp. 162-164
-
-
Rast, A.1
Johannes, T.W.2
Harth, W.3
Franz, G.4
-
13
-
-
0028523512
-
Characterisation of InGaAsP/InP ITG-DFB-BCRW lasers with contacted surface grating for λ=1.55 μm
-
Rast A., Mühlhoff A. Characterisation of InGaAsP/InP ITG-DFB-BCRW lasers with contacted surface grating for. λ=1.55 μm IEE Proc. Optoelectron. 141:1994;323-326
-
(1994)
IEE Proc. Optoelectron.
, vol.141
, pp. 323-326
-
-
Rast, A.1
Mühlhoff, A.2
-
14
-
-
0031117027
-
A strained-layer InGaAs-GaAs asymmetric cladding gain-coupled DFB laser with titanium surface gratings by metalorganic chemical vapor deposition
-
Osowski M.L., Panepucci R., Coleman J.J. A strained-layer InGaAs-GaAs asymmetric cladding gain-coupled DFB laser with titanium surface gratings by metalorganic chemical vapor deposition. IEEE Phot. Technol. Lett. 9:1997;422-424
-
(1997)
IEEE Phot. Technol. Lett.
, vol.9
, pp. 422-424
-
-
Osowski, M.L.1
Panepucci, R.2
Coleman, J.J.3
-
15
-
-
0031274306
-
An asymmetric cladding gain-coupled DFB laser with oxide denned metal surface grating by MOCVD
-
Osowski M.L., Hughes J.S., Coleman J.J. An asymmetric cladding gain-coupled DFB laser with oxide denned metal surface grating by MOCVD. IEEE Phot. Technol. Lett. 9:1997;1460-1462
-
(1997)
IEEE Phot. Technol. Lett.
, vol.9
, pp. 1460-1462
-
-
Osowski, M.L.1
Hughes, J.S.2
Coleman, J.J.3
-
16
-
-
0000076350
-
GaAs/AlGaAs distributed feedback quantum cascade lasers
-
Schrenk W., Finger N., Gianordoli S., Hvozdara L., Strasser G., Gornik E. GaAs/AlGaAs distributed feedback quantum cascade lasers. Appl. Phys. Lett. 76:2000;253-255
-
(2000)
Appl. Phys. Lett.
, vol.76
, pp. 253-255
-
-
Schrenk, W.1
Finger, N.2
Gianordoli, S.3
Hvozdara, L.4
Strasser, G.5
Gornik, E.6
-
17
-
-
0031142359
-
Distributed feedback quantum cascade lasers
-
Faist J., Gmachl C., Capasso F., Sirtori C., Sivco D.L., Baillargeon J.N., Cho A.Y. Distributed feedback quantum cascade lasers. Appl. Phys. Lett. 70:1997;2670-2672
-
(1997)
Appl. Phys. Lett.
, vol.70
, pp. 2670-2672
-
-
Faist, J.1
Gmachl, C.2
Capasso, F.3
Sirtori, C.4
Sivco, D.L.5
Baillargeon, J.N.6
Cho, A.Y.7
-
18
-
-
0000648840
-
Surface-emitting 10.1 μm quantum-cascade distributed feedback lasers
-
Hofstetter D., Faist J., Beck M., Müller A. Surface-emitting 10.1 μm quantum-cascade distributed feedback lasers. Appl. Phys. Lett. 75:1999;665-667
-
(1999)
Appl. Phys. Lett.
, vol.75
, pp. 665-667
-
-
Hofstetter, D.1
Faist, J.2
Beck, M.3
Müller, A.4
-
19
-
-
0028304539
-
Quantum cascade laser
-
Faist J., Capasso F., Sivco D.L., Sirtori C., Hutchinson A.L., Cho A.Y. Quantum cascade laser. Science. 264:1994;553-556
-
(1994)
Science
, vol.264
, pp. 553-556
-
-
Faist, J.1
Capasso, F.2
Sivco, D.L.3
Sirtori, C.4
Hutchinson, A.L.5
Cho, A.Y.6
-
20
-
-
0032517715
-
1-xAs quantum cascade lasers
-
1-xAs quantum cascade lasers. Appl. Phys. Lett. 73:1998;3486-3488
-
(1998)
Appl. Phys. Lett.
, vol.73
, pp. 3486-3488
-
-
Sirtori, C.1
Kruck, P.2
Barbieri, S.3
Collot, P.4
Nagle, J.5
Beck, M.6
Faist, J.7
Oesterle, U.8
-
21
-
-
0025432225
-
A numerical investigation of wave interactions in dielectric waveguides with periodic surface corrugations
-
Hadjicostas G., Butler J.K., Evans G.A., Stabile P.J. A numerical investigation of wave interactions in dielectric waveguides with periodic surface corrugations. IEEE J. Quant. Electron. QE-35:1990;893-902
-
(1990)
IEEE J. Quant. Electron.
, vol.QE-35
, pp. 893-902
-
-
Hadjicostas, G.1
Butler, J.K.2
Evans, G.A.3
Stabile, P.J.4
-
22
-
-
0038340668
-
Rigorous theory of grating-assisted couplers
-
Zhang S., Tamir T. Rigorous theory of grating-assisted couplers. J. Opt. Soc. Am. A. 13:1996;2403-2413
-
(1996)
J. Opt. Soc. Am. A
, vol.13
, pp. 2403-2413
-
-
Zhang, S.1
Tamir, T.2
-
23
-
-
0031357344
-
Analysis of grating-assisted directional couplers using the Floquet-Bloch theory
-
Sun N.H., Butler J.K., Evans G.A., Pang L., Congdon P. Analysis of grating-assisted directional couplers using the Floquet-Bloch theory. J. Lightwave Technol. A. 15:1997;2301-2315
-
(1997)
J. Lightwave Technol. A
, vol.15
, pp. 2301-2315
-
-
Sun, N.H.1
Butler, J.K.2
Evans, G.A.3
Pang, L.4
Congdon, P.5
-
24
-
-
0025404567
-
Analysis of grating surface emitting lasers
-
Noll R.J., Macomber S.H. Analysis of grating surface emitting lasers. IEEE J. Quant. Electron. QE-26:1990;456-466
-
(1990)
IEEE J. Quant. Electron.
, vol.QE-26
, pp. 456-466
-
-
Noll, R.J.1
MacOmber, S.H.2
-
25
-
-
0032662211
-
Analysis of metallized-grating coupled twin-waveguide structures
-
Finger N., Gornik E. Analysis of metallized-grating coupled twin-waveguide structures. IEEE J. Quant. Electron. QE-35:1999;832-843
-
(1999)
IEEE J. Quant. Electron.
, vol.35
, pp. 832-843
-
-
Finger, N.1
Gornik, E.2
-
27
-
-
0016980738
-
Analysis of grating-coupled radiation in GaAs:GaAlAs lasers and waveguides
-
Streifer W., Scifres D.R., Burnham R.D. Analysis of grating-coupled radiation in GaAs:GaAlAs lasers and waveguides. IEEE J. Quant. Electron. QE-12:1976;422-428
-
(1976)
IEEE J. Quant. Electron.
, vol.QE-12
, pp. 422-428
-
-
Streifer, W.1
Scifres, D.R.2
Burnham, R.D.3
-
28
-
-
0030242051
-
Investigation of high-efficiency surface-emitting lasers with blazed grating outcouplers
-
Hagberg M., Eriksson N., Larsson A. Investigation of high-efficiency surface-emitting lasers with blazed grating outcouplers. IEEE J. Quant. Electron. QE-32:1996;1596-1605
-
(1996)
IEEE J. Quant. Electron.
, vol.QE-32
, pp. 1596-1605
-
-
Hagberg, M.1
Eriksson, N.2
Larsson, A.3
-
30
-
-
0008642782
-
Radiative decay of optically excited coherent plasmons in a two-dimensional electron gas
-
Vosseburger M., Roskos H.G., Wolter F., Waschke C., Kurz H., Hirakawa K., Wilke I., Yamanaka K. Radiative decay of optically excited coherent plasmons in a two-dimensional electron gas. J. Opt. Soc. Am. B. 13:1996;1045-1053
-
(1996)
J. Opt. Soc. Am. B
, vol.13
, pp. 1045-1053
-
-
Vosseburger, M.1
Roskos, H.G.2
Wolter, F.3
Waschke, C.4
Kurz, H.5
Hirakawa, K.6
Wilke, I.7
Yamanaka, K.8
-
31
-
-
0030193733
-
Coherent submillimeter-wave emission from non-equilibrium two-dimensional free carrier plasmas in AlGaAs/GaAs heterojunctions
-
Hirakawa K., Wilke I., Yamanaka K., Roskos H.G., Vosseburger M., Wolter F., Waschke C., Kurz H., Grayson M., Tsui D.C. Coherent submillimeter-wave emission from non-equilibrium two-dimensional free carrier plasmas in AlGaAs/GaAs heterojunctions. Surf. Sci. 361:1996;368-371
-
(1996)
Surf. Sci.
, vol.361
, pp. 368-371
-
-
Hirakawa, K.1
Wilke, I.2
Yamanaka, K.3
Roskos, H.G.4
Vosseburger, M.5
Wolter, F.6
Waschke, C.7
Kurz, H.8
Grayson, M.9
Tsui, D.C.10
-
32
-
-
0001078119
-
Observation of terahertz radiation from higher-order two-dimensional plasmon modes in GaAs/AlGaAs single quantum wells
-
Sekine N., Yamanaka K., Hirakawa K., Vosseburger M., Haring-Bolivar P., Kurz H. Observation of terahertz radiation from higher-order two-dimensional plasmon modes in GaAs/AlGaAs single quantum wells. Appl. Phys. Lett. 74:1999;1006-1008
-
(1999)
Appl. Phys. Lett.
, vol.74
, pp. 1006-1008
-
-
Sekine, N.1
Yamanaka, K.2
Hirakawa, K.3
Vosseburger, M.4
Haring-Bolivar, P.5
Kurz, H.6
-
33
-
-
0032607021
-
Temperature dependence of far-infrared electroluminescence in parabolic quantum wells
-
Ulrich J., Zobl R., Unterrainer K., Strasser G., Gornik E., Maranowski K.D., Gossard A.C. Temperature dependence of far-infrared electroluminescence in parabolic quantum wells. Appl. Phys. Lett. 74:1999;3158-3160
-
(1999)
Appl. Phys. Lett.
, vol.74
, pp. 3158-3160
-
-
Ulrich, J.1
Zobl, R.2
Unterrainer, K.3
Strasser, G.4
Gornik, E.5
Maranowski, K.D.6
Gossard, A.C.7
-
34
-
-
0000286807
-
Dynamical response of double parabolically graded quantum wells
-
Wendler L., Kraft T. Dynamical response of double parabolically graded quantum wells. Phys. Rev. B. 54:1996;11436-11456
-
(1996)
Phys. Rev. B
, vol.54
, pp. 11436-11456
-
-
Wendler, L.1
Kraft, T.2
-
35
-
-
0023344204
-
Dynamical screening, collective excitations and electron-phonon interaction in heterostructures and semiconductor quantum wells: Application to double heterostructures
-
Wendler L., Pechstedt R. Dynamical screening, collective excitations and electron-phonon interaction in heterostructures and semiconductor quantum wells: Application to double heterostructures. Phys. Stat. Sol. (b). 141:1987;129-150
-
(1987)
Phys. Stat. Sol. (B)
, vol.141
, pp. 129-150
-
-
Wendler, L.1
Pechstedt, R.2
-
36
-
-
0346283373
-
Electron-phonon interaction, dynamical screening and collective excitation in heterostructures: I. Electron-phonon interaction
-
Wendler L., Haupt R., Grigoryan V.G. Electron-phonon interaction, dynamical screening and collective excitation in heterostructures: I. Electron-phonon interaction. Physica B. 167:1990;91-99
-
(1990)
Physica B
, vol.167
, pp. 91-99
-
-
Wendler, L.1
Haupt, R.2
Grigoryan, V.G.3
-
37
-
-
44949288992
-
Electron-phonon interaction, dynamical screening and collective excitation in heterostructures: II. Dynamically screened potential
-
Wendler L., Haupt R., Grigoryan V.G. Electron-phonon interaction, dynamical screening and collective excitation in heterostructures: II. Dynamically screened potential. Physica B. 167:1990;101-112
-
(1990)
Physica B
, vol.167
, pp. 101-112
-
-
Wendler, L.1
Haupt, R.2
Grigoryan, V.G.3
-
38
-
-
4243943769
-
Electron-phonon interaction, dynamical screening and collective excitation in heterostructures: III. Coupled intra- and intersubband plasmon-phonons
-
Wendler L., Haupt R., Grigoryan V.G. Electron-phonon interaction, dynamical screening and collective excitation in heterostructures: III. Coupled intra- and intersubband plasmon-phonons. Physica B. 167:1990;113-123
-
(1990)
Physica B
, vol.167
, pp. 113-123
-
-
Wendler, L.1
Haupt, R.2
Grigoryan, V.G.3
-
39
-
-
84990642640
-
Intra- and intersubband plasmon-polaritons in semiconductor quantum wells
-
Wendler L., Kändler E. Intra- and intersubband plasmon-polaritons in semiconductor quantum wells. Phys. Stat. Sol. (b). 177:1993;9-67
-
(1993)
Phys. Stat. Sol. (B)
, vol.177
, pp. 9-67
-
-
Wendler, L.1
Kändler, E.2
-
40
-
-
0347503190
-
Theory of grating-coupler-assisted infrared spectroscopy of lower-dimensional electron systems: Local optics of anisotropic multilayer systems with grating
-
Wendler L., Kraft T. Theory of grating-coupler-assisted infrared spectroscopy of lower-dimensional electron systems: Local optics of anisotropic multilayer systems with grating. Physica B. 271:1999;33-98
-
(1999)
Physica B
, vol.271
, pp. 33-98
-
-
Wendler, L.1
Kraft, T.2
-
41
-
-
84983867373
-
An improved virtual mode theory of ATR experiments on interface polaritons: Application to long-range surface plasmon-polaritons in asymmetric layer structures
-
Wendler L., Haupt R. An improved virtual mode theory of ATR experiments on interface polaritons: Application to long-range surface plasmon-polaritons in asymmetric layer structures. Phys. Stat. Sol. (b). 143:1987;131-148
-
(1987)
Phys. Stat. Sol. (B)
, vol.143
, pp. 131-148
-
-
Wendler, L.1
Haupt, R.2
-
42
-
-
0001653017
-
Electromagnetic Theory of Gratings
-
R. Petit. Heidelberg: Springer-Verlag
-
Petit R. Petit R. Electromagnetic Theory of Gratings. Springer Topics in Modern Physics. vol. 22:1980;1 Springer-Verlag, Heidelberg
-
(1980)
Springer Topics in Modern Physics
, vol.22
, pp. 1
-
-
Petit, R.1
-
43
-
-
0000084428
-
Exact eigenfunctions of square-wave gratings: Application to diffraction and surface-plasmon calculations
-
Sheng P., Stepleman R.S., Sanda P.N. Exact eigenfunctions of square-wave gratings: Application to diffraction and surface-plasmon calculations. Phys. Rev. B. 26:1982;2907-2916
-
(1982)
Phys. Rev. B
, vol.26
, pp. 2907-2916
-
-
Sheng, P.1
Stepleman, R.S.2
Sanda, P.N.3
-
44
-
-
0020192359
-
Rigorous coupled wave analysis of metallic surface-relief gratings
-
Moharam M.G., Gaylord T.K. Rigorous coupled wave analysis of metallic surface-relief gratings. J. Opt. Soc. Am. A. 72:1982;1385-1387
-
(1982)
J. Opt. Soc. Am. A
, vol.72
, pp. 1385-1387
-
-
Moharam, M.G.1
Gaylord, T.K.2
-
45
-
-
0030241250
-
Use of Fourier series in the analysis of discontinuous periodic structures
-
Li L. Use of Fourier series in the analysis of discontinuous periodic structures. J. Opt. Soc. Am. A. 13:1996;1870-1876
-
(1996)
J. Opt. Soc. Am. A
, vol.13
, pp. 1870-1876
-
-
Li, L.1
-
46
-
-
0000343624
-
Highly improved convergence of the coupled-wave method for TM polarization
-
Lalanne P., Morris G.M. Highly improved convergence of the coupled-wave method for TM polarization. J. Opt. Soc. Am. A. 13:1996;779-784
-
(1996)
J. Opt. Soc. Am. A
, vol.13
, pp. 779-784
-
-
Lalanne, P.1
Morris, G.M.2
-
47
-
-
0001150666
-
Efficient implementation of the coupled-wave method for metallic lamellar gratings in TM polarization
-
Granet G., Guizal B. Efficient implementation of the coupled-wave method for metallic lamellar gratings in TM polarization. J. Opt. Soc. Am. A. 13:1996;1019-1023
-
(1996)
J. Opt. Soc. Am. A
, vol.13
, pp. 1019-1023
-
-
Granet, G.1
Guizal, B.2
-
49
-
-
0029307028
-
Formulation for stable and efficient implementation of the rigorous coupled-wave analysis of binary gratings
-
Moharam M.G., Grann E.B., Pommet D.A., Gaylord T.K. Formulation for stable and efficient implementation of the rigorous coupled-wave analysis of binary gratings. J. Opt. Soc. Am. A. 12:1995;1068-1076
-
(1995)
J. Opt. Soc. Am. A
, vol.12
, pp. 1068-1076
-
-
Moharam, M.G.1
Grann, E.B.2
Pommet, D.A.3
Gaylord, T.K.4
-
50
-
-
0019043064
-
A new theoretical method for diffraction gratings and its numerical application
-
Chandezon J., Maystre D., Raoult G. A new theoretical method for diffraction gratings and its numerical application. J. Opt. (Paris). 11:1980;235-241
-
(1980)
J. Opt. (Paris)
, vol.11
, pp. 235-241
-
-
Chandezon, J.1
Maystre, D.2
Raoult, G.3
-
51
-
-
0033540126
-
Rigorous and efficient grating-analysis method made easy for optical engineers
-
Li L., Chandezon J., Granet G., Plumey J.P. Rigorous and efficient grating-analysis method made easy for optical engineers. Appl. Opt. 38:1999;304
-
(1999)
Appl. Opt.
, vol.38
, pp. 304
-
-
Li, L.1
Chandezon, J.2
Granet, G.3
Plumey, J.P.4
-
53
-
-
0000786817
-
Optics in stratified and anisotropic media: 4 × 4-matrix formulation
-
Berreman D.W. Optics in stratified and anisotropic media: 4. × 4-matrix formulation J. Opt. Soc. Am. 62:1972;502
-
(1972)
J. Opt. Soc. Am.
, vol.62
, pp. 502
-
-
Berreman, D.W.1
-
55
-
-
84954952924
-
Scattering matrix method for propagation of radiation in stratified media: Attenuated total reflection studies of liquid crystals
-
Ko D.Y.K., Sambles J.R. Scattering matrix method for propagation of radiation in stratified media: attenuated total reflection studies of liquid crystals. J. Opt. Soc. Am. 5:1988;1863-1866
-
(1988)
J. Opt. Soc. Am.
, vol.5
, pp. 1863-1866
-
-
Ko, D.Y.K.1
Sambles, J.R.2
-
56
-
-
4243288664
-
Retardation effects on intra- and intersubband plasmons in quantum wells and their manifestations in grating-coupler-assisted optical transmission
-
Wendler L., Kraft T. Retardation effects on intra- and intersubband plasmons in quantum wells and their manifestations in grating-coupler-assisted optical transmission. Phys. Rev. B. 60:1999;16603-16610
-
(1999)
Phys. Rev. B
, vol.60
, pp. 16603-16610
-
-
Wendler, L.1
Kraft, T.2
-
57
-
-
84953751498
-
-
London: Cambridge University Press. Chapter 10, Sections 12-15, pp. 239-246
-
Zygmund A. Trigonometric Series. 1949;Cambridge University Press, London. Chapter 10, Sections 12-15, pp. 239-246
-
(1949)
Trigonometric Series
-
-
Zygmund, A.1
|