Ranges and Trackers in Statistical Databases. - Zbigniew Michalewicz; Keh-Wei Chen (SSDBM, 1988)

Optimal Distribution of Restricted Ranges in Secure Statistical Database. - Zbigniew Michalewicz; Jia-Jie Li; Keh-Wei Chen (SSDBM, 1990)

A Genetic Algorithm for Statistical Database Security. - Zbigniew Michalewicz; Jia-Jie Le; Keh-Wei Chen (IEEE Data Eng. Bull., 1990)