Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{CMUC_1975__16_2_a8, author = {Zelinka, Bohdan}, title = {Tolerance relations on semilattices}, journal = {Commentationes Mathematicae Universitatis Carolinae}, pages = {333--338}, publisher = {mathdoc}, volume = {16}, number = {2}, year = {1975}, mrnumber = {0369199}, zbl = {0326.06004}, language = {en}, url = {http://geodesic.mathdoc.fr/item/CMUC_1975__16_2_a8/} }
Zelinka, Bohdan. Tolerance relations on semilattices. Commentationes Mathematicae Universitatis Carolinae, Tome 16 (1975) no. 2, pp. 333-338. http://geodesic.mathdoc.fr/item/CMUC_1975__16_2_a8/