@ARTICLE{
author={Goubko Mikhail,Magnant Colton,Nowbandegani Pouria Salehi,Gutman Ivan},
year={2015},
title={ABC Index of Trees with Fixed Number of Leaves},
journal={MATCH-COMMUNICATIONS IN MATHEMATICAL AND IN COMPUTER CHEMISTRY},
volume={74},
number={3},
pages={697-702},
document_type={Article},
} 

@ARTICLE{
author={Goubko Mikhail,Gutman Ivan},
year={2014},
title={Degree-based topological indices: Optimal trees with given number of pendents},
journal={APPLIED MATHEMATICS AND COMPUTATION},
volume={240},
number={},
pages={387-398},
document_type={Article},
}