Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{ELMA_1955__10_140631, author = {Josef Krames}, title = {Elementargeometrischer {Nachweis} des}, journal = {Elemente der Mathematik}, pages = {106--108}, publisher = {mathdoc}, volume = {10}, year = {1955}, zbl = {0064.41902}, url = {http://geodesic.mathdoc.fr/item/ELMA_1955__10_140631/} }
Josef Krames. Elementargeometrischer Nachweis des. Elemente der Mathematik, Tome 10 (1955), pp. 106-108. http://geodesic.mathdoc.fr/item/ELMA_1955__10_140631/