The quotient structure in granule computing. - Shu Zhao; Yanping Zhang 001; Ling Zhang 001; Jie Chen 025; Zhong Wan; Ying-chun Zhang; Chenxi Zhang (GrC, 2005)

Probability Model of Covering Algorithm (PMCA). - Shu Zhao; Yanping Zhang 001; Ling Zhang 001; Ping Zhang; Ying-chun Zhang (ICIC (1), 2006)