@ARTICLE{
author={Su Guifu,Xiong Liming,Gutman Ivan,Xu Lan},
year={2016},
title={Reciprocal Product-Degree Distance of Graphs},
journal={FILOMAT},
volume={30},
number={8},
pages={2217-2231},
document_type={Article},
} 

@ARTICLE{
author={Su Guifu,Xiong Liming,Gutman Ivan},
year={2013},
title={Harary Index of the K-Th Power of a Graph},
journal={APPLICABLE ANALYSIS AND DISCRETE MATHEMATICS},
volume={7},
number={1},
pages={94-105},
document_type={Article},
}