Andrey A. Dobrynin, “New Congruence Relations for the Wiener Index of Cata-Condensed Benzenoid Graphs”, J. Chem. Inf. Comput. Sci., 38, № 3, 1998, 405
Elena V. Konstantinova, “The Discrimination Ability of Some Topological and Information Distance Indices for Graphs of Unbranched Hexagonal Systems”, J. Chem. Inf. Comput. Sci., 36, № 1, 1996, 54
I. Gutmana, G. Dömötör, P. C. B. Lam, W. C. Shiu, L. Popović, “Szeged Indices of Benzenoid Hydrocarbons”, Polycyclic Aromatic Compounds, 8, № 4, 1996, 259
Ivan Gutman, Ycung‐Long Luo, Shyi‐Long Lee, “The Mean Isomer Degeneracy of the Wiener Index”, J Chinese Chemical Soc, 40, № 2, 1993, 195