Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{ELMA_1961__16_140731, author = {H. Hadwiger}, title = {Die {Kugel} als {K\"orper} extremaler {Korona}}, journal = {Elemente der Mathematik}, pages = {102--103}, publisher = {mathdoc}, volume = {16}, year = {1961}, language = {de}, url = {http://geodesic.mathdoc.fr/item/ELMA_1961__16_140731/} }
H. Hadwiger. Die Kugel als Körper extremaler Korona. Elemente der Mathematik, Tome 16 (1961), pp. 102-103. http://geodesic.mathdoc.fr/item/ELMA_1961__16_140731/