Estrada, E.; Guevara, N.; Gutman, I.; Rodriguez, L. Molecular Connectivity Indices of Iterated Line Graphs. A New Source of Descriptors for QSPR and QSAR. SAR & QSAR in Environmental Research 9, 1998, 229-240.

Estrada, E.; Guevara, N.; Gutman, I.; Rodriguez, L. Molecular Connectivity Indices of Iterated Line Graphs. A New Source of Descriptors for QSPR and QSAR. SAR & QSAR in Environmental Research 9, 1998, 229-240.