Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{CMH_1930__2_138544, author = {Anna Fischer}, title = {Gruppen und {Verkettungen.}}, journal = {Commentarii mathematici Helvetici}, pages = {253--268}, publisher = {mathdoc}, volume = {2}, year = {1930}, language = {de}, url = {http://geodesic.mathdoc.fr/item/CMH_1930__2_138544/} }
Anna Fischer. Gruppen und Verkettungen.. Commentarii mathematici Helvetici, Tome 2 (1930), pp. 253-268. http://geodesic.mathdoc.fr/item/CMH_1930__2_138544/