@ARTICLE{
author={Li Xueliang,Li Yiyang,Shi Yongtang T,Gutman Ivan},
year={2013},
title={Note on the HOMO-LUMO Index of Graphs},
journal={MATCH-COMMUNICATIONS IN MATHEMATICAL AND IN COMPUTER CHEMISTRY},
volume={70},
number={1},
pages={85-96},
document_type={Article},
}