Estrada, E.; Gutierrez , Y. The Balaban J index in the multidimensional space of generalized topological indices. Generalizations and QSPR improvements. MATCH: Communications in Mathematical and in Computer Chemistry 44, 2001, 155-167.

Estrada, E.; Gutierrez , Y. The Balaban J index in the multidimensional space of generalized topological indices. Generalizations and QSPR improvements. MATCH: Communications in Mathematical and in Computer Chemistry 44, 2001, 155-167.