The following publications are possibly variants of this publication:
- Some Problems Concerning Armstrong Relations of Dual Schemes and Relation Schemes in the Relational DatamodelJános Demetrovics, Vu Duc Thi. actaC, 11(1-2):35-48, 1993. [doi]
- Some Remarks On Generating Armstrong And Inferring Functional Dependencies RelationJános Demetrovics, Vu Duc Thi. actaC, 12(2):167-180, 1995. [doi]
- Some Problems Concerning Keys for Relation Schemes and Relations in the Relational DatamodelJános Demetrovics, Vu Duc Thi. ipl, 46(4):179-184, 1993.
- On Armstrong Relations for Strong DependenciesVu Duc Thi, Nguyen Hoang Son. actaC, 17(3):521-531, 2006. [doi]