Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{ELMA_1955__10_140622, author = {L. Locher-Ernst}, title = {Die zw\"olf {Nabelpunkte} des {Ellipsoides}}, journal = {Elemente der Mathematik}, pages = {49--57}, publisher = {mathdoc}, volume = {10}, year = {1955}, zbl = {0064.14801}, url = {http://geodesic.mathdoc.fr/item/ELMA_1955__10_140622/} }
L. Locher-Ernst. Die zwölf Nabelpunkte des Ellipsoides. Elemente der Mathematik, Tome 10 (1955), pp. 49-57. http://geodesic.mathdoc.fr/item/ELMA_1955__10_140622/