Volume 28 (1992)

• D. Babic, I. Gutman, S. Markovic, M. Stankovic: On the Almost-Isospectrality Concept for Benzenoid Systems, pp. 3-12
• A. T. Balaban, L. B. Kier, N. Joshi: Structure-Property Analysis of Octane Numbers for Hydrocarbons (Alkanes, Cycloalkanes, Alkenes), pp. 13-27
• G. Biess, M. Bautz: A Heuristical Polynomial Algorithm for Orbits of Nondirected, Connected Finite Digraphs with at least Two Vertices, pp. 29-43
• B. N. Cyvin, J. Brunvoll, S. J. Cyvin: All-Benzenoid Systems with Trigonal Symmetry, pp. 45-60
• M. V. Diudea, I. E. Kasco, O. M. Minailiuc: Molecular Topology 11. Y - Indices in Homogeneous Dendrimers, pp. 61-99
• S. B. Elk: Geometry and Markovnikov's Rule, pp.101-104
• G. L. Estiu, S. Maluendes, E. A. Castro, A. J. Arvia: Thermal Dissociative Adsorption Interactions for a Single Water Molecule on Pt(211) Surface Cluster. Extended Hueckel Calculations, pp. 105-137
• I. Gutman: Some Analytical Properties of the Independence and Matching Polynomials, pp. 139-150
• O. Ivanciuc, T. S. Balaban, P. Filip, A. T. Balaban: Design of Topological Indices. Part 7. Analytical Formulae for Local Vertex Invariants of Linear and Monocyclic Molecular Graphs, pp. 151-164
• P. E. John: Eine dritte graphentheorethische Bemerkung zur Resonanztheorie benzenoider Kohlenwasserstoffe, pp. 165-180
• P. E. John: Ueber Anzahlen von Linearfunktionen in hexagonalen Baendern, pp. 181-208
• P. E. John: Two Codes for Hexagonal Systems, pp. 209-218
• M. Lepovic, I. Gutman, M. Petrovic: A Conjecture in the Theory of Cyclic Conjugation and an Example Supporting its Validity, pp. 219-234
• T. Morikawa, A. T. Balaban: Topological Formulas and Upper/Lower Bounds in Chemical Polygonal Graphs, Particulary in Benzenoid Polyhexes, pp. 235-247
• R. P. Semwal: Rationalization of h Parameter of HMO Theory by Molecular Connectivity, pp. 249-259
• L. Tuerker: An Approximate Method for the Estimation of Total pi-Electron Energies of Alternant Hydrocarbons, pp. 261-276
• V. Elkin, X. Li: Topological Properties of Some Novel S,T-Isomers (I), pp. 277-286
• F. Zhang, R. Chen: Directed Tree Structure of the Set of Kekule Structures of Essentially Disconnected Benzenoids, pp. 287-294