@article{GDZPPN002336936, title = {Quartic isoparametric hypersurfaces and quadratic forms.}, journal = {Mathematische Annalen}, volume = {293}, year = {1992}, pages = {387-398}, zbl = {0737.53055}, url = {http://dml.mathdoc.fr/item/GDZPPN002336936} }
Solomon, Bruce. Quartic isoparametric hypersurfaces and quadratic forms.. Mathematische Annalen, Tome 293 (1992) pp. 387-398. http://gdmltest.u-ga.fr/item/GDZPPN002336936/