Voir la notice de l'article provenant de la source European Digital Mathematics Library
@misc{ELMA_1968__23_140889, title = {Neue {Aufgaben.}}, journal = {Elemente der Mathematik}, pages = {68--68}, publisher = {mathdoc}, volume = {23}, year = {1968}, url = {http://geodesic.mathdoc.fr/item/ELMA_1968__23_140889/} }
Neue Aufgaben.. Elemente der Mathematik, Tome 23 (1968), p. 68. http://geodesic.mathdoc.fr/item/ELMA_1968__23_140889/