@article{10_4007_annals_2007_166_1,
     author = {Thomas E. Cecil and Quo-Shin Chi and Gary R. Jensen},
     title = {Isoparametric hypersurfaces with four principal curvatures},
     journal = {Annals of mathematics},
     pages = {1--76},
     publisher = {mathdoc},
     volume = {166},
     number = {1},
     year = {2007},
     doi = {10.4007/annals.2007.166.1},
     mrnumber = {2342690},
     zbl = {1143.53058},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4007/annals.2007.166.1/}
}