REFERENCES
- Gutman , I. and Cyvin , S. J. 1989 . Introduction to the Theory of Benzenoid Hydrocarbons , Berlin : Springer-Verlag .
- Cyvin , S. J. and Gutman , I. 1988 . Kekulé Structures in Benzenoid Hydrocarbons , Berlin : Springer-Verlag .
- Clar , E. 1972 . The Aromatic Sextet , London : Wiley .
- Randić , M. 2003 . Aromaticity of Polycyclic Conjugated Hydrocarbons . Chem. Rev. , 103 : 3449 – 3606 . [CSA]
- Balaban , A. T. and Randić , M. “ Structural Approach to Aromaticity and Local Aromaticity: A Review ” . In Advanced Quantum Chemistry (Chemical Graph Theory: Wherefrom, Where/or, & Whereto) Edited by: Klein , D. J. and Brandas , E. in press
- Randić , M. and Balaban , A. T. 2005 . Partitioning of π -electrons of Rings of Polycyclic Hydrocarbons. Part 7. Clar Structures of Benzenoids . J. Chem. Inf. Model. , 45 in press[CSA]
- Aihara , J. 1976 . On the Number of Aromatic Sextets in a Benzenoid Hydrocarbon . Bull. Chem. Soc. Japan , 49 : 1429 – 1430 . [CSA]
- Hansen , P. and Zheng , M. 1992 . Upper Bonds for the Clar Number of a Benzenoid Hydrocarbon . J. Chem. Soc. Faraday Trans. , 88 : 1621 – 1625 . [CSA] [CROSSREF]
- Hansen , P. and Zheng , M. 1994 . The Clar Number of a Benzenoid Hydrocarbon and Linear Programming . J. Math. Chem. , 15 : 93 – 107 . [CSA] [CROSSREF]
- Abeledo , H. and Atkinson , G. 2000 . “ The Clar and Fries Problems for Benzenoid Hydrocarbons are Linear Programs ” . In Discrete Mathematical Chemistry , Edited by: Hansen , P. , Fowler , P. and Zheng , M. 1 – 8 . Providence : Am. Math. Soc. .
- Klav[zbreve]ar , S. , [Zbreve]igert , P. and Gutman , I. 2002 . Clar Number of Catacondensed Benzenoid Hydrocarbons . J. Mol. Struct. (Theochem) , 586 : 235 – 240 . [CSA] [CROSSREF]
- Salem , K. and Gutman , I. 2004 . Clar Number of Hexagonal Chains . Chem. Phys. Lett. , 394 : 283 – 286 . [CSA] [CROSSREF]
- El-Basil , S. and Randiç , M. 1988 . Clar Valence Structures of Benzenoid Hydrocarbons . J. Chem. Soc. Faraday Trans. , 2 ( 84 ) : 1875 – 1887 . [CSA]
- Randić , M. and El-Basil , S. 1994 . Graph Theoretical Analysis of Large Benzenoid Hydrocarbons . J. Mol. Struct. (Theochem) , 304 : 233 – 245 . [CSA] [CROSSREF]
- Randić , M. , El-Basil , S. , Nikolić , S. and Trinajstić , N. 1998 . Clar Polynomials of Large Benzenoid Hydrocarbons . J. Chem. Inf. Comput. Sci. , 38 : 563 – 574 . [CSA] [CROSSREF]
- Hosoya , H. and Yamaguchi , T. 1975 . Sextet Polynomial. A New Enumeration and Proof Technique for the Resonance Theory Applied to the Aromatic Hydrocarbons . Tetrahedron Lett. , : 4659 – 4662 . [CSA] [CROSSREF]
- Gutman , I. and El-Basil , S. 1984 . Topological Properties of Benzenoid Systems. XXIV. Computing the Sextet Polynomial . Z. Naturforsch. , 39a : 276 – 281 . [CSA]
- Gutman , I. and Cyvin , S. J. 1989 . A New Method for the Calculation of the Sextet Polynomial of Unbranched Catacondensed Benzenoid Hydrocarbons . Bull. Chem. Soc. Jpn. , 62 : 1250 – 1252 . [CSA]
- Balakrishnarajan , M. M. and Venuvanalingam , P. 1999 . A Semantic Tree Algorithm for the Generation of Sextet Polynomials of Hexagonal Systems . Comput. Math. Appl. , 37 : 97 – 104 . [CSA] [CROSSREF]
- Zhang , H. and Zhang , F. 1996 . The Clar Covering Polynomial of Hexagonal Systems I . Discr. Appl. Math. , 69 : 147 – 167 . [CSA] [CROSSREF]
- Zhang , H. 1997 . The Clar Covering Polynomials of Hexagonal Systems with an Application to Chromatic Polynomial . Discr. Math. , 172 : 163 – 173 . [CSA] [CROSSREF]
- Zhang , H. and Zhang , F. 2000 . The Clar Covering Polynomial of Hexagonal Systems III . Discr. Math. , 212 : 261 – 269 . [CSA] [CROSSREF]
- Gutman , I. 1983 . Topological Properties of Benzenoid Systems. XIX. Contributions to the Aromatic Sextet Theory . Wiss. Z. TH Ilmenau , 29 ( 3 ) : 57 – 65 . [CSA]
- He , W. J. and He , W. C. 1986 . One-to-one Correspondence between Kekulé and Sextet Patterns . Theor. Chim. Acta , 70 : 43 – 51 . [CSA] [CROSSREF]
- Ohkami , N. 1990 . Graph-theoretical Analysis of the Sextet Polynomial. Proof of the Correspondence between the Sextet Patterns and Kekulé Patterns . J. Math. Chem. , 5 : 23 – 42 . [CSA] [CROSSREF]
- Zhang , H. 1993 . The Clar Covering Polynomials of S,T-isomers . MATCH Commun. Math. Comput. Chem. , 29 : 189 – 197 . [CSA]
- Herndon , W. C. and Ellzey , M. L. 1974 . Resonance Theory. V. Resonance Energies of Benzenoid and Nonbenzenoid π Systems . J. Am. Chem. Soc. , 96 : 6631 – 6642 . [CSA] [CROSSREF]
- Gutman , I. and Herndon , W. C. 1975 . On Resonance Theory . Chem. Phys. Lett. , 34 : 387 – 391 . [CSA] [CROSSREF]
- Vesel , A. 2005 . Characterization of Resonance Graphs of Catacondensed Hexagonal Graphs . MATCH Commun. Math. Comput. Chem. , 53 : 195 – 208 . [CSA]
- Gutman , I. , Gojak , S. and Furtula , B. 2005 . Clar Theory and Resonance Energy . Chem. Phys. Lett. , 413 : 396 – 399 . [CSA] [CROSSREF]
- Zhang , F. , Zhang , H. and Liu , Y. 1996 . The Clar Covering Polynomial of Hexagonal Systems. II. An Application to Resonance Energy of Condensed Aromatic Hydrocarbons . Chin. J. Chem. , 14 : 321 – 325 . [CSA]
- Gutman , I. 1985 . Topological Properties of Benzenoid Systems. XXVIII. Number of Kekulé Structures of Some Benzenoid Hydrocarbons . MATCH Commun. Math. Comput. Chem. , 17 : 3 – 10 . [CSA]