%0 Journal Article
%T The  and -Analogs of Zagreb Indices and Coindices of Graphs
%A Toufik Mansour
%A Chunwei Song
%J International Journal of Combinatorics
%D 2012
%I Hindawi Publishing Corporation
%R 10.1155/2012/909285
%X The first and second Zagreb indices were first introduced by Gutman and Trinajstić (1972). It is reported that these indices are useful in the study of anti-inflammatory activities of certain chemical instances, and in elsewhere. Recently, the first and second Zagreb coindices, a new pair of invariants, were introduced in Došlić (2008). In this paper we introduce the  and (,)-analogs of the above Zagreb indices and coindices and investigate the relationship between the enhanced versions to get a unified theory.
%U http://www.hindawi.com/journals/ijct/2012/909285/