Volume 44 (2001), a special issue dedicated to Professor Alexandru T. Balaban on the occasion of his 70th birthday (Eds. M. V. Diudea, O. Ivanciuc)

Editorial

• O. Ivanciuc, M. V. Diudea: Alexandru T. Balaban - Chemistry Between Laboratory and Computer, pp. 5-13
• S. C. Basak, D. Mills: Use of Mathematical Structural Invariants in the Development of QSPR Models, pp. 15-30
• L. Bytautas, D. Bonchev, D. J. Klein: On the Generation of Mean Wiener Numbers of Thorny Graphs, pp. 31-40
• E. Besalu, A. Gallegos, R. Carbo-Dorca: Topological Quantum Similiarity Indices and their Use in QSAR: Application to Several Families of Antimalarial Compounds, pp. 41-64
• D. Ciubotariu, A. Grozav, V. Gogonea, C. Ciubotariu, M. Medeleanu, D. Dragos, M. Pasere, Z. Simon: The Effects of Retinoids Upon Epithelial Differentiation of Hamster Trachea, Induction of Ornithine Decarboxylase and Promotion of Tumors in Mouse Epidermis. A QSAR Study by MTD Method, pp. 65-92
• M. V. Diudea, A. Graovac: Generation and Graph-Theoretical Properties of C4-Tori, pp. 93-102
• M. V. Diudea, P. E. John: Covering Polyhedral Tori, pp. 103-116
• M. V. Diudea, I. Silaghi-Dumitrescu, B. Parv: Toranes Versus Torenes, pp. 117-133
• A. A. Dobrynin, L. S. Mel'nikov: Path Layer Matrix for Weighted Graphs, pp. 135-146
• E. C. Kirby: Remarks Upon an Elementary Problem in Stepwise Network Construction, pp. 147-154
• E. Estrada, Y. Gutierrez: The Balaban J Index in the Multidimensional Space of Generalized Topological Indices. Generalizations and QSPR Improvements, pp. 155-167
• I. Gutman, T. Soldatovic: (n,m)-Type Approximations for Total pi-Electron Energy of Benzenoid Hydrocarbons, pp. 169-182
• H. Hosoya, K. Ohta, M. Satomi: Topological Twin Graphs II. Isospectral Polyhedral Graphs with Nine and Ten Vertices, pp. 183-200
• L. Tarko, O. Ivanciuc: QSAR Modeling of the Anticonvulsant Activity of Phylacetanilides with PRECLAV (Property Evaluation by Class Variables), pp. 201-214
• L. B. Kier, L. H. Hall: Database Organization and Searching with E-State Indices, pp. 215-235
• R. B. King: Automorphism Groups and Spectra of Highly Symmetrical Graphs Generating Possible Carbon and Boron Nitride Structures by Leapfrog Transformations: The Klein and Dyck Graphs, pp. 237-250
• O. Ivanciuc, T. Ivanciuc, D. J. Klein: Intrinsic Graph Distances Compared to Euclidean Distances for Correspondent Graph Embedding, pp. 251-278
• I. Lukovits: A Theorem on Graph Valence Shells, pp. 279-286
• G. Jovanovski, B. Soptrajanov, L. Pejov, L. Prangova: Fourier Transform Infrared and Computational Study of Two O-substituted S-Phenyl Thiobenzoates, pp. 287-296
• G. Naray-Szabo: Quantitative Estimation of Electrostatic Complementarity, pp. 297-304
• A. Graovac, A. Orbanic, T. Pisanski: Geometry Versus Topology: Overlapping Spheres Model Corrected for Angles, pp. 305-317
• K. T. Balinska, L. V. Quintas: Algorithms for the Random f-Graph Process, pp. 319-333
• Z. Slanina, F. Uhlik, S. L. Lee, E. Osawa: Geometrical and Thermodynamic Approaches to the Relative Stabilities of Fullerene Isomers, pp. 335-348
• S. Timofei, L. Kurunczi, Z. Simon: Structure-Affinity Relationships by the MTD Method for Binding to Cellulose Fibre of Some Heterocyclic Monoazo Dyes, pp. 349-360
• S. Nikolic, D. Plavsic, N. Trinajstic: On the Balaban-Like Topological Indices, pp. 361-386
• C. Sarbu, H. F. Pop: Fuzzy Classification and Comparison of Some Romanian and American Coals, pp. 387-400