Volume 20 (1986)

Contributions

• M. Fraczak: Non-Orbital Approach to Many Electron Atomic Systems. A Finite Difference Equation for the Ground State Energy of Systems in Their Isoelectronic Series, pp. 3-20
• J. P. Lowe, M. R. Soto: Isospectral Graphs, Symmetry, and Perturbation Theory, pp. 21-51
• W. C. Herndon, M. L. Ellzey: The Construction of Isospectral Graphs, pp. 53-79
• I. Gutman, S. El-Basil: Fibonacci Graphs, pp. 81-94
• J. Cioslowski: The Generalized McClelland Formula, pp. 95-101
• J. Cioslowski: Further Applications of the Additive Nodal Increments, pp. 103-113
• I. Gutman, O. E. Polansky: Wiener Numbers of Polyacenes and Related Benzenoid Molecules, pp. 115-123
• M. Barysz, D. Bonchev, O. Mekenyan: Graph-Centre, Self-Returning Walks, and Critical Pressure of Alkanes, pp. 125-139
• F. J. Asencor, J. M. Gracia: A Note on Essentially Positive Matrices Which Appear in Chemical Kinetics, pp. 141-163
• S. J. Cyvin: Distribution of K, the Number of Kekule Structures in Benzenoid Hydrocarbons. Part I: Upper and Lower Bounds of K, pp. 165-179
• S. J. Cyvin, B. N. Cyvin: Number of Kekule Structures for Condensed Parallelograms and Related Benzenoids with Repeated Units, pp. 181-195
• J. V. Knop, W. R. Mueller, K. Szymanski, N. Trinajstic: A Note on the Number of Circulenes, pp. 197-208
• J. Cioslowski, M. D. Wala: A Critical Examination of Various Nomenclature Systems of Condensed Benzenoid Hydrocarbons and Their Comparison with the Compact Naming, pp. 209-227
• X. L. Su: Linear Recursion Relations and the Enumeration of Kekule Structures of Benzenoid Hydrocarbons, pp. 229-239
• W. Haesselbarth: A Generalisation of the Polya/De Brujin Enumeration Theory and Its Application to "Chemical Combinatorics", pp. 241-250
• R. Vancea, S. Holban, D. Ciubotariu: Context-Free Grammar and Deterministic Automaton Approaches for Sequence Generation in Copolymers. I. Binary Copolymers with Ultimate Effect, pp. 251-279
• M. Strunje: On the Matching and the Characteristic Polynomial of the Graph of Truncated Octahedron, pp. 283-287
• I. P. Bangov: Computation of Cartesian Coordinates of Atoms Rotated Around an Arbitrary Bond, pp. 289-292