Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{MZ_1969__111_171200, author = {Reuben Sandler}, title = {On {Free} {Extensions} of {Rank} 1.}, journal = {Mathematische Zeitschrift}, pages = {233--248}, publisher = {mathdoc}, volume = {111}, year = {1969}, zbl = {0176.17704}, url = {http://geodesic.mathdoc.fr/item/MZ_1969__111_171200/} }
Reuben Sandler. On Free Extensions of Rank 1.. Mathematische Zeitschrift, Tome 111 (1969), pp. 233-248. http://geodesic.mathdoc.fr/item/MZ_1969__111_171200/