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@article{PORMA_1981__40_4_115476, author = {Massabo, I.}, title = {Unbounded components of solutions for equations of {Birkhoff-Kellogg} type}, journal = {Portugaliae mathematica}, pages = {463--467}, publisher = {mathdoc}, volume = {40}, number = {4}, year = {1981}, mrnumber = {0836110}, zbl = {0588.47071}, language = {en}, url = {http://geodesic.mathdoc.fr/item/PORMA_1981__40_4_115476/} }
Massabo, I. Unbounded components of solutions for equations of Birkhoff-Kellogg type. Portugaliae mathematica, Tome 40 (1981) no. 4, pp. 463-467. http://geodesic.mathdoc.fr/item/PORMA_1981__40_4_115476/