[1] CHAJDA I.:
Characterizations of Hamiltonian algebras. Czechoslovak Math. J. 42 (1992), 487-489.
MR 1179311 |
Zbl 0778.08001
[2] CHAJDA I.:
Algebras and varieties satisfying the congruence extension property. Acta Sci. Math. (Szeged) 56 (1992), 19-21.
MR 1204734 |
Zbl 0768.08005
[3] DAY A.:
A note on the congruence extension property. Algebra Universalis 1 (1971), 234-235.
MR 0294215 |
Zbl 0228.08001
[4] KISS E. W.:
Each Hamiltonian variety has the congruence extension property. Algebra Universalis 12 (1981), 395-398.
MR 0624304 |
Zbl 0422.08003
[5] KLUKOVITS L.:
Hamiltonian varieties of universal algebra. Acta Sci. Math. (Szeged) 37 (1975), 11-15.
MR 0401611