Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{ELMA_1962__17_140754, author = {H. Hadwiger}, title = {Ungel\"oste {Probleme.}}, journal = {Elemente der Mathematik}, pages = {84--85}, publisher = {mathdoc}, volume = {17}, year = {1962}, url = {http://geodesic.mathdoc.fr/item/ELMA_1962__17_140754/} }
H. Hadwiger. Ungelöste Probleme.. Elemente der Mathematik, Tome 17 (1962), pp. 84-85. http://geodesic.mathdoc.fr/item/ELMA_1962__17_140754/