Volume 11 (1981)

Reports and Reviews

• W. C. Herndon: Notes on Valence Bond Theory, Structure-Resonance Theory, and Graph Theory, pp. 3-11
• H. G. Bartel: Gedanken Zum Verhaeltnis von Chemie und Spieltheorie, pp. 13-22
• H. G. Bartel: Ausweichspiele und Chemisches Verhalten - Eine Anregung, pp. 23-32

Contributions

• V. Kopsky: Exomorphism of Group Subgroup Relations and Lattices of Stability Spaces, pp. 35-43
• V. Kopsky: The Concept of Extended Integrity Bases, pp. 45-51
• K. Schubert: On the Binding in B^{0..2}B_{M}^2 Mixtures, pp. 53-68
• I. M. Mladenov, J. G. Vassileva-Popova: A Note on Hybridization, pp. 69-73
• I. Gutman: Bounds for the Smallest positive Eigenvalue af a Bipartite Molecular Graph, pp. 75-86
• O. Castano, P. Karadakov: On the HMO Treatment of Systems, Built of Repeating Units, pp. 87-95
• S. El-Basil: On Additivity of Resonance Energies of Benzenoid Hydrocarbons; The Conjugated Circuits of Randic (6), pp. 97-125
• I. Gutman: Some Combinatorial Consequences of Clar's Resonant Sextet Theory, pp. 127-143
• O. Mekenyan, D. Bonchev, N. Trinajstic: A Topological Characterization of Cyclic Structures with Acyclic Branches, pp. 145-168
• I. Motoc: New Informational Indices for Interactions in Biological Systems, pp.169-183
• I. Motoc, O. Dragomir-Filimonescu, R. Valceanu: Numerical Integration of the Van der Waals Envelope of the Substituents, pp. 185-189