Parts' Grouping by Means of Fuzzy Mathematics and Probability Theories. - Lijun Liu; Guangxun Yang (APMS, 1993)

Criteria for lean practice selection: Development an assessment tool using the rooted arborescence. - Yongjian Liang; Siqing Shan; Lihong Qiao; Yong Lei; Guangxun Yang (CASE, 2015)

Modeling and Application on System Influence to Lean Practice Based on Relationship Network. - Yongjian Liang; Siqing Shan; Lihong Qiao; Guangxun Yang (AsiaSim/SCS AutumnSim (1), 2016)