[1] P. D. Bacsich, D. R. Hughes:
Syntactic characterisations of amalgamation, convexity and related properties. J. of Symbolic Logic 39 (1974), 433 -451.
MR 0379165 |
Zbl 0302.02019
[2] B. Banaschewski, E. Nelson:
Equational compactness in equational classes of algebras. Algebra Universalis 2 (1972), 152-165.
MR 0308010 |
Zbl 0258.08005
[3] P. C. Eklof:
Algebraic closure operators and strong amalgamation bases. Algebra Universalis 4 (1974), 89-98.
MR 0384648 |
Zbl 0296.08009
[4] T. Evans:
Some connections between residual finiteness, finite embeddability and the word problem. J. London Math. Soc. I (1969), 399-403.
MR 0249344 |
Zbl 0184.03502
[5] G. Grätzer:
Universal algebra. Van Nostrand, Princeton, New Jersey 1968.
MR 0248066
[6] J. Ježek:
An embedding of groupoids and monomorphisms into simple groupoids. Commentationes Math. Univ. Carolinae 11 (1970), 91 - 98.
MR 0260840
[7] J. Ježek:
The existence of upper semicomplements in lattices of primitive classes. Commentationes Math. Univ. Carolinae 12 (1971), 519-532.
MR 0292734
[8] B. Jónsson:
Extensions of relational structures. The theory of models. Proc. of the 1963 International Symposium at Berkeley, North-Holland, Amsterdam, 1965, 146-157.
MR 0202601
[9] B. Jónsson:
Algebras whose congruence lattices are distributive. Math. Scand. 21 (1967), 110-121.
MR 0237402
[10] H. Lakser:
Injective completeness of varieties of unary algebras: a remark on a paper of Higgs. Algebra Universalis 3 (1973), 129-130.
MR 0335407 |
Zbl 0284.08001
[11] R. McKenzie:
Definability in lattices of equational theories. Annals of math. logic 3 (1971), 197-237.
MR 0280349 |
Zbl 0328.02038
[12] Don Pigozzi:
Amalgamation, congruence-extension, and interpolation properties in algebras. Algebra Universalis 1 (1971), 269-349.
MR 0300897
[13] J. Plonka:
On the subdirect product of some equational classes of algebras. Math. Nachr. 63 (1974), 303-305.
MR 0360414 |
Zbl 0289.08002