@article{GDZPPN002080877, title = {Steinerellipsoide.}, journal = {Elemente der Mathematik}, volume = {38}, year = {1983}, pages = {137-142}, url = {http://dml.mathdoc.fr/item/GDZPPN002080877} }
Krause, Hans-Ulrich. Steinerellipsoide.. Elemente der Mathematik, Tome 38 (1983) pp. 137-142. http://gdmltest.u-ga.fr/item/GDZPPN002080877/