Eliminating Cycles in Database Schemas. - Yoshito Hanatani (Advances in Data Base Theory, 1982)

Join-Decomposition of MVD-Constraints Using the Characterization by "Bases" - An Introductive Study. - Yoshito Hanatani (FODO, 1985)

A Simple Characterization of Database Dependency Implication. - Yoshito Hanatani; Ronald Fagin (Inf. Process. Lett., 1986)