By year

Sheng Zhou, Dongheon Lee, Bingjie Leng, Xuan Zhou, Honggang Zhang, and Zhisheng Niu, On the Spatial Distribution of Base Stations and Its Relation to the Traffic Density in Cellular Networks, IEEE Access, 2015, 3:998-1010
Sheng Zhou, Zhisheng Niu, Shiro Tanabe, and Peng Yang CHORUS: Framework for Scalable Collaboration in Heterogeneous Networks with Cognitive Synergy, IEEE Wireless Communications, Aug. 2013