Estrada, E.; Ivanciuc, O.; Gutman, I.; Gutierrez, A.; Rodriguez, L. Extended Wiener Indices. A New Set of Descriptors for Quantitative Structure-Property Studies. New Journal of Chemistry 22, 1998, 819-823.

Estrada, E.; Ivanciuc, O.; Gutman, I.; Gutierrez, A.; Rodriguez, L. Extended Wiener Indices. A New Set of Descriptors for Quantitative Structure-Property Studies. New Journal of Chemistry 22, 1998, 819-823.