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@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/} }
T. RIEDRICH. Das Birkhoff-Kellogg-Theorem für lokal radial beschränkte Räume.. Mathematische Annalen, Tome 166 (1966), pp. 264-276. http://geodesic.mathdoc.fr/item/MAN_1966__166_161462/