1. G. Grätzer, General Lattice Theory, second edition. New appendices by the author with B. A. Davey, R. Freese, B. Ganter, M. Greferath, P. Jipsen, H. A. Priestley, H. Rose, E. T. Schmidt, S. E. Schmidt, F. Wehrung and R. Wille. Birkhäuser Verlag (Basel, 1998). xx-663 pp. ISBN: 0-12-295750-4, ISBN: 3-7643-5239-6. Softcover edition, Birkhäuser Verlag (Basel-Boston-Berlin, 2003), ISBN: 3-7643-6996-5.
2. G. Grätzer, The Congruences of a Finite Lattice, A Proof-by-Picture Approach, Birkhäuser (Boston, 2005), xxiii + 281 pp. ISBN: 0-8176-3224-7.
3. G. Grätzer and H. Lakser, Notes on sectionally complemented lattices. I. Characterizing the 1960 sectional complement, Acta Math. Hungar., 108 (2005), 115–125.
4. G. Grätzer, H. Lakser and M. Roddy, Notes on sectionally complemented lattices. III: The general problem, Acta Math. Hungar., 109 (2005), 325–334.
5. G. Grätzer and E. T. Schmidt, On congruence lattices of lattices, Acta Math. Acad. Sci. Hungar., 13 (1962), 179–185.