P. Bohannon, W. Fan, F. Geerts, X. Jia, and A. Kementsietsidis, Conditional functional dependencies for data cleaning, Data Engineering, International Conference on 0, pp.746-755, 2007.

R. Medina and L. Nourine, A unified hierarchy for functional dependencies, conditional functional dependencies and association rules, Formal Concept Analysis, vol.5548, pp.98-113, 2009.