Extremal catacondensed hexagonal systems with respect to the PI index

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Volumn 55, Issue 2, 2006, Pages 453-460

  Deng, Han Yuan ^a  

^a HUNAN NORMAL UNIVERSITY   (China)

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EID: 33748299864     PISSN: 03406253     EISSN: None     Source Type: Journal    
DOI: None     Document Type: Article

References (7)

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2. N. TRINAJSTIĆ, Chemical Graph Theory (2nd revised ed.), CRC Press, Boca Raton, FL, 1992.
3. I. GUTMAN, A formula for the Wiener number of trees and its extension to graphs containing cycles, Graph Theory Notes New York 27, (1994), 9-15.
4. P. V. KHADIKAR, N. V. DESHPANDE, P. P. KALE, A. DOBRYNIN, I. GUTMAN AND G. DÖMÖTÖR, The Szeged index and an analogy with the Wiener index, J. Chem. Inform. Comput. Sci. 35, (1995), 547-550.
5. P. V. KHADIKAR, P. P. KALE, N. V. DESHPANDE, S. KARMARKAR AND V. K. AGRAWAL, Novel PI indices of hexagonal chains, J. Math. Chem. 29, (2001), 143-150.
6. P. V. KHADIKAR, S. KARMARKAR AND V. K. AGRAWAL, A novel PI index and its applications to QSRP/QSAR studies, J. Chem. Inf. Comput. Sci. 41(4), (2001), 934-949.
7. A. A. DOBRYNIN, I. GUTMAN, S. KLAVŽAR, AND P. ŽIGERT, Wiener index of hexagonal systems, Acta Appl. Math. 72, (2002), 247-294.