K. C. Das, D. W. Lee and A. Graovac (2013). Some properties of the Zagreb eccentricity indices. Ars Math. Contemp.. 6, 117-125

N. De (2012). On multiplicative Zagreb eccenticity indices. South Asian J. Math.. 2 (6), 570-577

Z. Du, B. Zhou and N. Trinajstic (2012). Extremal properties of the Zagreb eccentricity indices. Croat. Chem. Acta. 85 (3), 359-362

M. Ghorbani and M. A. Hosseinzadeh (2012). A new version of Zagreb indices. Filomat. 26, 93-100

I. Gutman and N. Trinajstic (1972). Graph theory and molecular orbitals, Total pi electron energy of alternant hydrocarbons. Chem. Phys. Lett.. 17, 535-538

I. Gutman (2011). Multipicative Zagreb indices of trees. Bull. Internat. Math. Virt. Inst.. 1, 13-19

M. H. Khalifeh, H. Yousefi-Azari and A. R. Ashrafi (2009). The first and second Zagreb indices of some graph operations. Discrete Appl. Math.. 157, 804-811

R. Todeschini and V. Consonni (2010). New local vertex invariants and molecular descriptors based on functions of the vertex degree. MATCH Commun. Math. Comput. Chem.. 64, 359-372

D. Vukiucevic and A. Graovac (2010). Note on the comparison of the first and second normalized Zagreb eccentricity indices. Acta Chim. Slov.. 57, 524-528

D. B. West (1996). Introduction to Graph Theory. second ed., Prentice Hall, Inc., Upper Saddle River, NJ.

R. Xing, B. Zhou and N. Trinajstic (2011). On Zagreb eccentricity indices. Croat. Chem. Acta. 84 (4), 493-497