@article{KJM_2012_36_2_a15,
     author = {Kexiang Xu and Kechao Tang and Kinkar Ch. Das and Huansong Yue},
     title = {Chromatic number and some multiplicative vertex-degree-based indices of graphs},
     journal = {Kragujevac Journal of Mathematics},
     pages = {323 },
     publisher = {mathdoc},
     volume = {36},
     number = {2},
     year = {2012},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/KJM_2012_36_2_a15/}
}