Estrada, E. Edge Adjacency Relationships in Molecular Graphs Containing Heteroatoms: A New Topological Index Related to Molar Volume. Journal of Chemical Information and Computer Science 35, 1995, 701-707.

Estrada, E. Edge Adjacency Relationships in Molecular Graphs Containing Heteroatoms: A New Topological Index Related to Molar Volume. Journal of Chemical Information and Computer Science 35, 1995, 701-707.