An Open Model for Developing Knowledge-Based User Interfaces. - Li Xie; Du Xing; Zhongxiu Sun (IFIP Congress (3), 1992)

Open model methodology: a new approach to the development of user interfaces based on knowledge processing. - Du Xing; Xie Li (Softw. Eng. J., 1992)

General Natural Language for Operating Systems. - Xie Li; Du Xing (SIGART Bull., 1992)

An Introduction to Intelligent Operating System KZ2. - Li Xie; Du Xing; Chen Jun; Yuhua Zheng; Zhongxiu Sun (ACM SIGOPS Oper. Syst. Rev., 1995)