A file organization suitable for relational database operations. - Katsumi Tanaka; Chung Le Viet; Yahiko Kambayashi; Shuzo Yajima (Mathematical Studies of Information Processing, 1978)

Use of abstracted characteristics of data in relational databases. - Chung Le Viet; Yahiko Kambayashi; Katsumi Tanaka; Shuzo Yajima (COMPSAC, 1979)

Design and Implementation of a Relational Database Server In a Heterogeneous Network Environment. - Chung Le Viet; Mark D. Yanike; Eric J. Johnson; Eric J. Byrne (ICDE, 1986)