Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{DCG_1995__13_3-4_131377, author = {P.M. Gruber}, title = {A {Helmholtz-Lie} {Type} {Characterization} of {Ellipsoids,} {I} .}, journal = {Discrete & computational geometry}, pages = {517--528}, publisher = {mathdoc}, volume = {13}, number = {3-4}, year = {1995}, zbl = {0824.52006}, url = {http://geodesic.mathdoc.fr/item/DCG_1995__13_3-4_131377/} }
P.M. Gruber. A Helmholtz-Lie Type Characterization of Ellipsoids, I .. Discrete & computational geometry, Tome 13 (1995) no. 3-4, pp. 517-528. http://geodesic.mathdoc.fr/item/DCG_1995__13_3-4_131377/