Publisher
Springer Science and Business Media LLC
Subject
Algebra and Number Theory
Reference3 articles.
1. Clifford, A.H. and G.B. Preston,The Algebraic Theory of Semigroups, Vol. 1, Amer. Math. Soc., 1961.
2. Halder, H.-R. und W. Heise,Einführung in die Kombinatorik, Carl Hauser Verlag, München-Wien, 1976.
3. Butler, K. K.-H.,Combinatorial properties of binary semigroups, Periodica Math. Hung. 5 (1974), 3–46.