@ARTICLE{
author={Dankelmann P,Gutman Ivan,Mukwembi S,Swart HC},
year={2009},
title={On the degree distance of a graph},
journal={DISCRETE APPLIED MATHEMATICS},
volume={157},
number={13},
pages={2773-2777},
document_type={Article},
} 

@ARTICLE{
author={Dankelmann P,Gutman Ivan,Mukwembi S,Swart HC},
year={2009},
title={The edge-Wiener index of a graph},
journal={DISCRETE MATHEMATICS},
volume={309},
number={10},
pages={3452-3457},
document_type={Article},
}