Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{CMUC_1971__12_2_a11, author = {Wichs, Tom\'a\v{s}}, title = {On minimal semirigid relations}, journal = {Commentationes Mathematicae Universitatis Carolinae}, pages = {359--365}, publisher = {mathdoc}, volume = {12}, number = {2}, year = {1971}, mrnumber = {0284355}, zbl = {0214.51203}, language = {en}, url = {http://geodesic.mathdoc.fr/item/CMUC_1971__12_2_a11/} }
Wichs, Tomáš. On minimal semirigid relations. Commentationes Mathematicae Universitatis Carolinae, Tome 12 (1971) no. 2, pp. 359-365. http://geodesic.mathdoc.fr/item/CMUC_1971__12_2_a11/