@article{102216, author = {Bed\v rich Pond\v el\'\i \v cek}, title = {Commutative semigroups whose lattice of tolerances is Boolean}, journal = {Czechoslovak Mathematical Journal}, volume = {38}, year = {1988}, pages = {226-230}, zbl = {0657.20052}, mrnumber = {946290}, language = {en}, url = {http://dml.mathdoc.fr/item/102216} }
Pondělíček, Bedřich. Commutative semigroups whose lattice of tolerances is Boolean. Czechoslovak Mathematical Journal, Tome 38 (1988) pp. 226-230. http://gdmltest.u-ga.fr/item/102216/
Semigroups whose lattice of congruences is Boolean, Pacific J. Math. 77(1978), 131-143. (1978) | Article | MR 0507626 | Zbl 0413.20044
Semigroups with a Boolean algebra of stable tolerances, Ural. Gos. Univ. Mat. Zap. 13 (1983), 146-158. (1983) | MR 0750971 | Zbl 0546.20058
The algebraic theory of semigroups, Amer. Math. Soc., Providence, R. I., Vol. I (1961), Vol. II (1967). (1961) | Zbl 0111.03403
Group theory, Prentice-Hall, Engelwood Cliffs, N. J., 1973. (1973)
Tolerance distributive and tolerance boolean varieties of semigroups, Czech. Math. J. 36 (111) (1986), 617- 622. (1986) | MR 0863191
Semilattices of groups with distributive congruence lattice, Semigroup Forum 14 (1977), 81 - 91. (1977) | Article | MR 0437660 | Zbl 0392.20041