1. Armstrong, W. [1974] “Dependency structures of database relationships”, Proc. IFIP 74 ,North-Holland, 580–583.
2. Armstrong, W. and Delobel, C. [1980] “Decompositions and Functional Dependencies in Relations, ACM Trans. Database Sys. 5,4 (December 1980) 404–430.
3. Beeri, C. and Bernstein, P. A. [1979] “Computational Problems Related to the Design of Normal Form Relation Schemes,”ACM Trans. Database Sys. 4,(1) (March 1979) 30–59.
4. Bernstein, P. A. [1975] “Normalization and Functional Dependencies in the Relational Database Model” CSRG-60, Computer Systems Research Group, Univ. of Toronto, Canada.
5. Codd, E. F. [1972] “Further Normalizations of the Database Relational Model,” In: Data Base Systems (R. Rustin, Ed.), Prentice Hall, N.J., 33–64.