[1] J. Ježek:
The lattice of equational theories. Part I: Modular elements. Czech. Math. J. 31 (1981), 127-153.
MR 0604120
[2] J. Ježek:
The lattice of equational theories. Part II: The lattice of full sets of terms. Czech. Math. J. 31 (1981), 573-603.
MR 0631604
[4] J. Ježek:
On atoms in lattices of primitive classes. Comment. Math. Univ. Carolinae 11 (1970), 515-532.
MR 0269571
[5] J. Ježek:
Varieties of algebras with equationally definable zeros. Czechoslovak Math. J. 27 (1977), 473-503.
MR 0453610
[6] J. Ježek:
EDZ-varieties: The Schreier property and epimorphisms onto. Comment. Math. Univ. Carolinae 17 (1976), 281-290.
MR 0409317
[7] M. Kozák:
Finiteness conditions on EDZ-varieties. Comment. Math. Univ. Carolinae 17 (1976), 461-472.
MR 0424646
[9] A. Tarski:
Equational logic and equational theories of algebras. 275 - 288 in: H. A. Schmidt, K. Schütte and H. J. Thiele, eds., Contributions to Mathematical Logic, North-Holland, Amsterdam 1968.
MR 0237410 |
Zbl 0209.01402