Voir la notice de l'article provenant de la source European Digital Mathematics Library
@misc{ELMA_1969__24_140952, title = {Aufgaben.}, journal = {Elemente der Mathematik}, pages = {136--139}, publisher = {mathdoc}, volume = {24}, year = {1969}, url = {http://geodesic.mathdoc.fr/item/ELMA_1969__24_140952/} }
Aufgaben.. Elemente der Mathematik, Tome 24 (1969), pp. 136-139. http://geodesic.mathdoc.fr/item/ELMA_1969__24_140952/