Estrada, E. Spectral Moments of the Edge Adjacency Matrix of Molecular Graphs. 2. Molecules Containing Heteroatoms and QSAR Applications. Journal of Chemical Information and Computer Science 37, 1997, 320-328.

Estrada, E. Spectral Moments of the Edge Adjacency Matrix of Molecular Graphs. 2. Molecules Containing Heteroatoms and QSAR Applications. Journal of Chemical Information and Computer Science 37, 1997, 320-328.