Aromatic Character of the Benzene Ring Present in Various Topological Environments in Benzenoid Hydrocarbons. Nonequivalence of Indices of Aromaticity. - Tadeusz Marek Krygowski; Arkadiusz Ciesielski; Clive William Bird; Andras Kotschy (J. Chem. Inf. Comput. Sci., 1995)