Voir la notice de l'article provenant de la source European Digital Mathematics Library
@misc{ELMA_1973__28_141096, title = {Aufgaben.}, journal = {Elemente der Mathematik}, pages = {44--48}, publisher = {mathdoc}, volume = {28}, year = {1973}, url = {http://geodesic.mathdoc.fr/item/ELMA_1973__28_141096/} }
Aufgaben.. Elemente der Mathematik, Tome 28 (1973), pp. 44-48. http://geodesic.mathdoc.fr/item/ELMA_1973__28_141096/