Zhao, Yang, Guanfeng Liu, Kai Zheng, An Liu, Zhixu Li, and Xiaofang Zhou. 2017. “CAT: Context-Aware Trust-Oriented Worker Selection in Social Crowd”. Computing and Informatics 36 (3):517-40. http://147.213.75.17/ojs/index.php/cai/article/view/2017_3_517.