[1] Chajda I.:
Algebraic Theory of Tolerance Relations. Monograph Series of Palacký University, Olomouc, 1991.
Zbl 0747.08001
[2] Chajda I., Czédli G.:
A Note on Representation of Lattices by Tolerances. J. of Algebra 148 (1992), 274-275.
MR 1161577 |
Zbl 0777.08002
[3] Grätzer G., Schmidt E. T.:
Characterization of congruence lattice of abstract algebras. Acta Sci. Math. (Szeged) 24 (1963), 34-59.
MR 0151406
[4] Iskander A. A.:
The lattice of correspondences of universal algebras. Izv. Akad. Nauk SSSR, Ser. Mat. 29 (1965), 1357-1372 (Russian).
MR 0199139
[5] Jónsson B.:
Topics in Universal Algebra. Lectures Notes in Math. 250, Springer Verlag, Berlin-Heidelberg-New York, 1972.
MR 0345895