Voir la notice de l'article provenant de la source European Digital Mathematics Library
@misc{ELMA_1970__25_140980, title = {Aufgaben.}, journal = {Elemente der Mathematik}, pages = {88--91}, publisher = {mathdoc}, volume = {25}, year = {1970}, url = {http://geodesic.mathdoc.fr/item/ELMA_1970__25_140980/} }
Aufgaben.. Elemente der Mathematik, Tome 25 (1970), pp. 88-91. http://geodesic.mathdoc.fr/item/ELMA_1970__25_140980/