@article{MAN_1966__166_161462,
     author = {T. RIEDRICH},
     title = {Das {Birkhoff-Kellogg-Theorem} f\"ur lokal radial beschr\"ankte {R\"aume.}},
     journal = {Mathematische Annalen},
     pages = {264--276},
     publisher = {mathdoc},
     volume = {166},
     year = {1966},
     zbl = {0144.17803},
     url = {http://geodesic.mathdoc.fr/item/MAN_1966__166_161462/}
}