1. On Zagreb and Harary indices;Das;MATCH Commun. Math. Comput. Chem.,2013
2. A unified approach to the extremal Zagreb indices for trees, unicyclic graphs and bicyclic graphs;Deng;MATCH Commun. Math. Comput. Chem.,2007
3. Modified Narumi-Katayama index;Ghorbani;Kragujevac J. Sci.,2012
4. Graphs with smallest sum of squares of vertex degrees;Gutman;Kragujevac J. Math.,2003
5. Graph theory and molecular orbitals. Total π−electron energy of alternant hydrocarbons;Gutman;Chem. Phys. Lett.,1972