The graph with differently labelled (coloured) vertices (chromatic graph) which represent
different kinds of atoms and differently labelled (coloured) edges related to different
types of bonds. Within the topological electron distribution theory, a complete network
of the bond paths for a given nuclear configuration.
IUPAC. Compendium of Chemical Terminology, 2nd ed. (the "Gold Book"). Compiled by
A. D. McNaught and A. Wilkinson. Blackwell Scientific Publications, Oxford (1997).
XML on-line corrected version: http://goldbook.iupac.org (2006-) created by M. Nic,
J. Jirat, B. Kosata; updates compiled by A. Jenkins. ISBN 0-9678550-9-8. https://doi.org/10.1351/goldbook