Voir la notice de l'article provenant de la source European Digital Mathematics Library
@misc{ELMA_1949__4_140500, title = {Berichte.}, journal = {Elemente der Mathematik}, pages = {19--21}, publisher = {mathdoc}, volume = {4}, year = {1949}, url = {http://geodesic.mathdoc.fr/item/ELMA_1949__4_140500/} }
Berichte.. Elemente der Mathematik, Tome 4 (1949), pp. 19-21. http://geodesic.mathdoc.fr/item/ELMA_1949__4_140500/