@ARTICLE{
author={Su Guifu,Xu Lan,Chen Zhibing,Gutman Ivan},
year={2021},
title={On Reformulated Reciprocal Product-Degree Distance},
journal={MATCH-COMMUNICATIONS IN MATHEMATICAL AND IN COMPUTER CHEMISTRY},
volume={85},
number={2},
pages={441-460},
document_type={Article},
} 

@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},
}