Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{MASLO_1983__33_2_a0, author = {\v{S}ipo\v{s}, J\'an}, title = {On magnifying elements in grupoids}, journal = {Mathematica slovaca}, pages = {129--132}, publisher = {mathdoc}, volume = {33}, number = {2}, year = {1983}, mrnumber = {699080}, zbl = {0517.22002}, language = {en}, url = {http://geodesic.mathdoc.fr/item/MASLO_1983__33_2_a0/} }
Šipoš, Ján. On magnifying elements in grupoids. Mathematica slovaca, Tome 33 (1983) no. 2, pp. 129-132. http://geodesic.mathdoc.fr/item/MASLO_1983__33_2_a0/