[1] DAY A.:
A characterization of modularity for congruence lattices of algebras. Canad. math. Bull., 12, 1969, 167-173.
MR 0248063 |
Zbl 0181.02302
[3] GRÄTZER G.:
Universal algebra. Van Nostrand, Princeton N. J., 1968.
MR 0248066
[4] GEDEONOVÁ E.:
A characterization of p-modularity for congruence lattices of algebras. Acta Fac. Rerum Natur. Univ. Comenian. Math., 28, 1972, 99-106.
MR 0313169
[5] HUHN A.:
Schwach distributive Verbände. Acta Fac. Rerum Natur. Univ. Comenian. Math. Mim. č., 1971, 51-56.
MR 0382106 |
Zbl 0385.06010
[6] JÓNSSON B.:
Algebras whose congruence lattices are distributive. Math. Scand., 21, 1967, 110-121.
MR 0237402
[7] McKENZIE R.:
Equational bases and nonmodular lattice varieties. Trans. Amer. math. Soc, 174, 1972, 1-43.
MR 0313141
[8] MEDERLY P.: Mal'cev type conditions for equational classes of algebras. (Slovak), Thesis, Komenský Univ., Bratislava, 1971.