[1] CRAWLEY P., DILWORTH R. P.: Algebraic theory of lattices. Pгentice Hall Inc., 1973. Zbl 0494.06001

[2] GRÄTZER G.: Universal algebra. Von Nostrand, Princeton, New Yoгk 1968. MR 0248066

[3] JONSSON B.: Topics in universal algebra. Lecture Notes in Math., Vol. 250, Springer Veгlag, Berlin and New York 1970. MR 0345895

[4] KOREC I.: A ternary function for distributivity and peгmutability of an equivalence lattice. Proc. Amer. Math. Soc., Vol. 69, Number 1, April 1978, 8-10. MR 0472648

[5] PIXLEY A. F.: Completeness in arithmetical algebras. Algebra univ., 2, 1972, 179-196. MR 0321843 | Zbl 0254.08010