Lallement, Gerard J. Paul Dubreil (1904-1994) in memoriam. (English) Zbl 0809.01013 Semigroup Forum 50, No. 1, 1-7 (1995). MSC: 01A60 01A70 PDF BibTeX XML Cite \textit{G. J. Lallement}, Semigroup Forum 50, No. 1, 1--7 (1995; Zbl 0809.01013) Full Text: DOI OpenURL
Desq, R. Rélations d’équivalence principales en théorie des demi-groupes. (French) Zbl 0141.01702 Ann. Fac. Sci. Univ. Toulouse, IV. Ser. 27, 150 p. (1964). PDF BibTeX XML Cite \textit{R. Desq}, Ann. Fac. Sci. Univ. Toulouse, IV. Sér. 27, 150 p. (1964; Zbl 0141.01702) Full Text: DOI Numdam EuDML OpenURL