@article{MAN_1985__270_182941,
     author = {M. Guyot},
     title = {Caract\'erisation par l'uniformit\'e des fibres universels sur la {Grassmanienne.}},
     journal = {Mathematische Annalen},
     pages = {47--62},
     year = {1985},
     volume = {270},
     zbl = {0543.14008},
     url = {http://geodesic.mathdoc.fr/item/MAN_1985__270_182941/}
}