Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{SF_1997__54_2_135509, author = {P. Goralcik and V. Koubek}, title = {Universal coextensions within a variety.}, journal = {Semigroup forum}, pages = {92--99}, publisher = {mathdoc}, volume = {54}, number = {2}, year = {1997}, zbl = {0873.20041}, url = {http://geodesic.mathdoc.fr/item/SF_1997__54_2_135509/} }
P. Goralcik; V. Koubek. Universal coextensions within a variety.. Semigroup forum, Tome 54 (1997) no. 2, pp. 92-99. http://geodesic.mathdoc.fr/item/SF_1997__54_2_135509/