Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{SF_1972__4_133891, author = {T. Evans}, title = {When is a functionally free algebra free?}, journal = {Semigroup forum}, pages = {177--184}, publisher = {mathdoc}, volume = {4}, year = {1972}, zbl = {0255.08004}, url = {http://geodesic.mathdoc.fr/item/SF_1972__4_133891/} }
T. Evans. When is a functionally free algebra free?. Semigroup forum, Tome 4 (1972), pp. 177-184. http://geodesic.mathdoc.fr/item/SF_1972__4_133891/