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I. Gutman and N. Trinajsti?, “Graph Theory and Molecular Orbitals, Total φ-Electron Energy of Alternant Hydrocarbons,” Chemical Physics Letters, Vol. 17, 1972, pp. 535-538. doi:10.1016/0009-2614(72)85099-1

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• TITLE: New Bounds for Zagreb Eccentricity Indices

  AUTHORS: Nilanjan De

  KEYWORDS: Vertex Degree; Eccentricity; Zagreb Eccentricity Indices

  JOURNAL NAME: Open Journal of Discrete Mathematics, Vol.3 No.1, January 29, 2013

  ABSTRACT: The Zagrebeccentricity indices are the eccentricity version of the classical Zagrebindices. The first Zagrebeccentricity index (E1(G)) is defined as sum of squares of the eccentricities of the vertices and the second Zagrebeccentricity index (E2(G)) is equal to sum of product of the eccentricities of the adjacent vertices. In this paper we give some new upper and lower bounds for first and second Zagreb eccentricity indices.