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Thi Vu Duc; Nguyen Hoang Son: On Armstrong relations for strong dependencies. In: Acta cybernetica, (17) 3. pp. 521-531. (2006)
Thi Vu Duc; Nguyen Hoang Son: Some results related to dense families of database relations. In: Acta cybernetica, (17) 1. pp. 173-182. (2005)
Thi Vu Duc; Nguyen Hoang Son: Some problems related to keys and the Boyce-Codd normal form. In: Acta cybernetica, (16) 3. pp. 473-483. (2004)
