Fast Algorithms Constructing Minimal Subalgebras, Congruences, and Ideals in a Finite Algebra.

Jiri Demel Marie Demlová Václav Koubek Fast Algorithms Constructing Minimal Subalgebras, Congruences, and Ideals in a Finite Algebra. 203-216 1985 36 Theor. Comput. Sci. db/journals/tcs/tcs36.html#DemelDK85