1. Rings with Generalized Identities;Beidar,1996
2. Groupes et Anneaux Réticulés;Bigard,1977
3. Lattice Theory;Birkhoff,1967
4. Lattice-ordered rings;Birkhoff;An. Acad. Brasil. Ciênc.,1956
5. Generalized semigroup rings;Conrad;J. Indian Math. Soc.,1957