Voir la notice de l'article provenant de la source European Digital Mathematics Library
@misc{ELMA_1972__27_141051, title = {Aufgaben.}, journal = {Elemente der Mathematik}, pages = {39--42}, publisher = {mathdoc}, volume = {27}, year = {1972}, url = {http://geodesic.mathdoc.fr/item/ELMA_1972__27_141051/} }
Aufgaben.. Elemente der Mathematik, Tome 27 (1972), pp. 39-42. http://geodesic.mathdoc.fr/item/ELMA_1972__27_141051/