Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{CMH_1929__1_138526, author = {Anna Fischer}, title = {Zentrale {Verkettungen.}}, journal = {Commentarii mathematici Helvetici}, pages = {313--323}, publisher = {mathdoc}, volume = {1}, year = {1929}, language = {de}, url = {http://geodesic.mathdoc.fr/item/CMH_1929__1_138526/} }
Anna Fischer. Zentrale Verkettungen.. Commentarii mathematici Helvetici, Tome 1 (1929), pp. 313-323. http://geodesic.mathdoc.fr/item/CMH_1929__1_138526/