[2] Duda J.:
Directly decomposable compatible relations. Glasnik Matem. (Zagreb) 19 (1984), 225-229.
MR 0790008 |
Zbl 0559.08001
[3] Duda J.:
Varieties having directly decomposable congruence classes. Časopis pěstování matem. 111 (1986), 394-403.
MR 0871715 |
Zbl 0606.08001
[4] Duda J.: Varieties with directly decomposable diagonal subalgebras form Маl'сеv classes. Preprint.
[7] Grätzer G.:
Universal Algebra. Second Expanded Edition. Springer-Verlag, Berlin-Heidelberg-New York, 1979.
MR 0538623
[8] Hagemann J.: Congruences on products and subdirect products of algebras. Preprint Nr. 219, TH-Darmstadt, 1975.
[9] Niederle J.:
Decomposability conditions for compatible relations. Czech. Math. Journal 33 (108) (1983), 522-524.
MR 0721082 |
Zbl 0538.08007