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Author: Lakser, Harry

• Grätzer, G.; Lakser, Harry: Freely adjoining a complement to a lattice. (English). Mathematica Slovaca, vol. 56 (2006), issue 1, pp. 93-104
• Grätzer, G.; Lakser, Harry; Schmidt, E. T.: Congruence representations of join-homomorphisms of distributive lattices: a short proof. (English). Mathematica Slovaca, vol. 46 (1996), issue 4, pp. 363-369