The following publications are possibly variants of this publication:
- Some Remarks on Functional Dependencies in Relational DatamodelsVu Duc Thi, Le Thi Thanh. actaC, 11(4):345-352, 1994. [doi]
- Normal Forms and Minimal Keys in the Relational DatamodelJános Demetrovics, Vu Duc Thi. actaC, 11(3):205-216, 1994. [doi]
- Some results about functional dependenciesJános Demetrovics, Vu Duc Thi. actaC, 8:273-278, 1988.
- Weak Dependencies in the Relational DatamodelVu Duc Thi, N. K. Anh. actaC, 10(1-2):93-100, 1991. [doi]