Ge Wang's work on measuring scientific impact highlighted at phys.org

Ge Wang's work on how to measure scientific impact has been discussed at phys.org. The article refers to a recent paper that Wang and co-authors have published in PNAS. More information can be found here:
Jonathan Stallings, Eric Vance, Jiansheng Yang, Michael W. Vannier, Jimin Liang, Liaojun Pang, Liang Dai, Ivan Ye, and Ge Wang "Determining scientific impact using a collaboration index." PNAS Early Edition.
http://www.pnas.org/content/110/24/9680