REFERENCES
- Clifford , A. H. , Preston , G. B. ( 1964/1967 ). The algebraic theory of semigroups . Amer. Math. Soc. , Vol. 1 and 2. R.I: Providence .
- Dubreil , P. ( 1941 ). Contribution á la théorie des demi-groupes . Mém. Acad. Sci. Inst. France 63 ( 3 ): 1 – 52 .
- Dudek , W. A. , Trokhimenko , V. S. ( 2012 ). Algebras of Multiplace Functions . Berlin/ Boston : Walter de Gruyter GmbH & Co. KG .
- Schein , B. M. , Trohimenko , V. S. ( 1979 ). Algebras of multiplace functions . Semigroup Forum 17 : 1 – 64 .
- Schein , B. M. ( 1988 ). Embedding semigroups in inverse semigroups. (Transl. from Mat. Sb., 1961, 55(97):374–400) Ser. 2. Am. Math. Soc. 139:93–116 .
- Communicated by V. A. Artamonov.