1. On the structure of abstract algebras;Bmkhoff;Proceedings of the Cambridge Philosophical Society,1935
2. Distributive and modular laws in the arithmetic of relation algebras;Chin;University of California Publications in Mathematics, new series,1951
3. Boolean algebras with operators, Part II, American;Jónsson;Journal of Mathematics,1952
4. Equational completeness of abstract algebras;Kalicki;Indagationes Mathematicae,1955
5. Some equationally complete algebras;Kalicki;Bulletin of the American Mathematical Society,1953