Constraint specification for object model of access control based on role. - Han Yan; Chun-Gen Xu; Gong-Xuan Zhang; Feng-Yu Liu (ACM SIGSOFT Softw. Eng. Notes, 2000)

Transaction of Web Services Based on Struts. - Gong-Xuan Zhang; Ping-Li Wang; Wen Chen (APPT, 2005)