Levy, B. J. Demi-groupe et categorie modulaires. (French) Zbl 0166.27804 C. R. Acad. Sci., Paris 260, 4134-4136 (1965). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Keywords:generalized groups, semigroups PDFBibTeX XMLCite \textit{B. J. Levy}, C. R. Acad. Sci., Paris 260, 4134--4136 (1965; Zbl 0166.27804)