Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{CMH_1962__37_139256, author = {Christian Blatter}, title = {\"Uber ein {Typenproblem.}}, journal = {Commentarii mathematici Helvetici}, pages = {198--213}, publisher = {mathdoc}, volume = {37}, year = {1962}, url = {http://geodesic.mathdoc.fr/item/CMH_1962__37_139256/} }
Christian Blatter. Über ein Typenproblem.. Commentarii mathematici Helvetici, Tome 37 (1962), pp. 198-213. http://geodesic.mathdoc.fr/item/CMH_1962__37_139256/