1. Lattice Theory;Birkhoff,1973
2. Komplementäre Kontexte von Verbänden;Deiters,1993
3. Sums, products and negations of contexts and complete lattices;Deiters,1995
4. Categories of Contexts;Erné,1990
5. Distributive laws for concept lattices;Erné;Algebra Universalis,1993