Sade, A. Quasigroupes demi-symétriques. Isotopies preservant la demisymetrie. (French) Zbl 0143.03002 Math. Nachr. 33, 177-188 (1967). PDFBibTeX XMLCite \textit{A. Sade}, Math. Nachr. 33, 177--188 (1967; Zbl 0143.03002) Full Text: DOI
Sade, Albert Quasigroupes parastrophiques. Expressions et identités. (French) Zbl 0092.25801 Math. Nachr. 20, 73-106 (1959). PDFBibTeX XMLCite \textit{A. Sade}, Math. Nachr. 20, 73--106 (1959; Zbl 0092.25801) Full Text: DOI