@article {
author = {Gutman, Ivan and Naji, Ahmed and Soner, Nandappa},
title = {On leap Zagreb indices of graphs},
journal = {Communications in Combinatorics and Optimization},
volume = {2},
number = {2},
pages = {99-117},
year = {2017},
publisher = {Azarbaijan Shahid Madani University},
issn = {2538-2128},
eissn = {2538-2136},
doi = {10.22049/cco.2017.25949.1059},
abstract = {The first and second Zagreb indices of a graph are equal, respectively, to the sum of squares of the vertex degrees, and the sum of the products of the degrees of pairs of adjacent vertices. We now consider analogous graph invariants, based on the second degrees of vertices (number of their second neighbors), called leap Zagreb indices. A number of their basic properties is established.},
keywords = {degree (of vertex),Second degree,Zagreb indices,leap Zagreb indices},
url = {http://comb-opt.azaruniv.ac.ir/article_13643.html},
eprint = {http://comb-opt.azaruniv.ac.ir/article_13643_fc88ed6fdf52b7f7a7ad4b621f695992.pdf}
}