G. Gratzer et al., SMALL REPRESENTATIONS OF FINITE DISTRIBUTIVE LATTICES AS CONGRUENCE LATTICES, Proceedings of the American Mathematical Society, 123(7), 1995, pp. 1959-1961
A recent result of G. Gratzer, H. Lakser, and E. T. Schmidt states tha
t for any distributive lattice D with n join-irreducible elements, the
re exists a lattice L with O(n(2)) elements, whose congruence lattice
Con L is isomorphic to D. We show that this result is best possible.