Bloom, Stephen L.; Ésik, Zoltán Two axiomatizations of a star semiring quasi-variety. (English) Zbl 0856.08009 Bull. EATCS 59, 150-152 (1996). MSC: 08C15 06F25 08C10 08A70 68Q45 PDFBibTeX XMLCite \textit{S. L. Bloom} and \textit{Z. Ésik}, Bull. EATCS 59, 150--152 (1996; Zbl 0856.08009)
Bloom, Stephen L.; Ésik, Zoltán Cayley iff Stone. (English) Zbl 0749.08003 Bull. EATCS 43, 159-161 (1991). Reviewer: J.R.Isbell (Buffalo) MSC: 08A70 06E15 08B26 03E25 PDFBibTeX XMLCite \textit{S. L. Bloom} and \textit{Z. Ésik}, Bull. EATCS 43, 159--161 (1991; Zbl 0749.08003)