@incollection{AST_1988__163-164__111_0,
     author = {Karcher, Hermann},
     title = {A geometric classification of positively curved symmetric spaces and the isoparametric construction of the {Cayley} plane},
     booktitle = {On the Geometry of Differentiable Manifolds Rome, 23-27 juin 1986},
     series = {Ast\'erisque},
     pages = {111--135},
     publisher = {Soci\'et\'e math\'ematique de France},
     number = {163-164},
     year = {1988},
     zbl = {0669.53038},
     language = {en},
     url = {http://www.numdam.org/item/AST_1988__163-164__111_0/}
}