Volume 12 (1981)

Contributions

• K. Wirth, M. K. Huber: Numbering of Finite Relational Systems, pp. 3-14
• I. Motoc: Ein Woerterbuch der Chemie - Die Sequenzlaengenverteilung. Theorie, Rechenverfahren, Anwendung, pp. 15-24
• M. Barasch, S. Marcus, A. T. Balaban: Codification of Acyclic Isoprenoid Structures Using Context-Free Grammars and Pushdown Automata, pp. 25-64
• L. V. Quintas, J. Yarmish: Valence Isomers for Chemical Trees, pp. 65-73
• L. V. Quintas, P. J. Slater: Pairs of Non-Isomorphic Graphs Having the Same Path Degree Sequence, pp. 75-86
• R. S. Lall: Topology of Chemical Reactions: The Fragmentation of Hydrocarbons, pp. 87-96
• R. S. Lall: Topology of Chemical Reactions. II. Pericyclic Reactions, pp. 97-107
• I. Motoc, I. Muscutariu: Structural Metric Induced by the Steric Difference (SD*) Method, pp. 109-115
• I. Motoc, O. Dragomir-Filimonescu: Molecular Interactions in Biological Systems I. Steric Interactions. The Sibis Algorithm, pp. 117-126
• I. Motoc, O. Dragomir-Filimonescu: Molecular Interactions in Biological Systems II. Hydrophobic Interactions. The Hibis Algorithm, pp. 127-134
• I. Motoc, O. Dragomir-Filimonescu: Molecular Interactions in Biological Systems III. The Sibis and Hibis Programs. Applications., pp. 135-167

Discussions and Letters

• O. E. Polansky, N. N. Tyutyulkov: Bindungsordnungen und Ladungsdichten in Regelmaessigen Linearen Polymeren, pp. 171-175
• O. E. Polansky, N. N. Tyutyulkov: Bindungsordnungen und Polyacenen, pp. 176-183