Volume 80 (2018) number 2

• R. Todeschini, C. Valsecchi: Activity Cliffs and Structural Cliffs for Categorical Responses, pp. 283-294
• D. Panas, P. Waz, D. Bielinska-Waz, A. Nandy, S. C. Basak: An Application of the 2D-Dynamic Representation of DNA/RNA Sequences to the Prediction of Influenza A Virus Subtypes, pp. 295-310
• J. A. Montoya, C. Mejia, R. D. Bourdon, E. Cruz, J. Agreda: On the Stability Analysis of Chiral Networks and the Emergence of Homochirality, pp. 311-344
• R. Sazeedeh, N. Noroozi Pesyan: A Mathematical Characterization of Monosaccharides, pp. 345-354
• A. Saadatmandi, S. Fayyaz: Numerical Study of Oxygen and Carbon Substrate Concentrations in Excess Sludge Production Using Sinc-Collocation Method, pp. 355-368
• R. Singh, A. M. Wazwaz: Optimal Homotopy Analysis Method for Oxygen Diffusion in a Spherical Cell with Nonlinear Oxygen Uptake Kinetics, pp. 369-382
• M. Norouzi, A. Mohammadi, V. Leoreanu-Fotea: Hypergroups Obtained from Formation Reaction of Simple Gas Hydrates, pp. 383-392
• H. Hosoya: Dormant and Sprouts Generating Isospectral Tree Graphs. I. Facts, pp. 393-405
• H. Chen, F. Zhang: On HOMO-LUMO Separation of Acyclic Molecules, pp. 407-414
• X. Li, W. So, I. Gutman: Constructions of Graphs and Trees with Partially Prescribed Spectrum, pp. 415-421
• K. Coolsaet, P. W. Fowler, J. Goedgebeur: Generation and Properties of Nut Graphs, pp. 423-444
• D. Stevanovic: Comments on "Some New Results on Energy of Graphs", pp. 445-447
• B. Deng, X. Li, Y. Li: (Signless) Laplacian Borderenergetic Graphs and the Join of Graphs, pp. 449-457
• M. Bianchi, A. Cornaro, J. L. Palacios, A. Torriero: Lower Bounds for the Resolvent Energy, pp. 459-465
• E. Kaya, A. D. Maden: A Generalization of the Incidence Energy and the Laplacian-Energy-Like Invariant, pp. 467-480
• M. A. Medvedeva, T. E. Simos: A New High Order Finite Difference Pair with Improved Properties, pp. 481-536