1. On some small varieties of distributive Ockham algebras;Beazer;Glasgow Math. J.,1984
2. Distributive lattices with an additional unary operation;Berman;Aequationes Math.,1977
3. Finite distributive lattices and finite partially ordered sets;Berman,1976
4. On a common abstraction of de Morgan algebras and Stone algebras;Blyth,1983
5. Subvarieties of the class of MS-algebras;Blyth,1983