@article{BMMS_2013_36_1_a0,
     author = {Rongling Lang and Xiaole Deng and Hui Lu},
     title = {Bipartite {Graphs} with the {Maximal} {Value} of the {Second} {Zagreb} {Index}},
     journal = {Bulletin of the Malaysian Mathematical Society},
     year = {2013},
     volume = {36},
     number = {1},
     url = {http://geodesic.mathdoc.fr/item/BMMS_2013_36_1_a0/}
}