Please cite the following if you use the data:
@inproceedings{nr,
title={The Network Data Repository with Interactive Graph Analytics and Visualization},
author={Ryan A. Rossi and Nesreen K. Ahmed},
booktitle={AAAI},
url={http://networkrepository.com},
year={2015}
}
@article{opsahl2009clustering,
title={Clustering in weighted networks},
author={Opsahl, T. and Panzarasa, P.},
journal={Social networks},
volume={31},
number={2},
pages={155--163},
year={2009},
publisher={Elsevier}
}