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@article{PORMA_1962__21_2_114881, author = {Abian, Alexander and Brown, Arthur B.}, title = {A fixed point theorem for the closed 2-cell}, journal = {Portugaliae mathematica}, pages = {93--98}, publisher = {mathdoc}, volume = {21}, number = {2}, year = {1962}, mrnumber = {0145501}, zbl = {0107.16603}, language = {en}, url = {http://geodesic.mathdoc.fr/item/PORMA_1962__21_2_114881/} }
Abian, Alexander; Brown, Arthur B. A fixed point theorem for the closed 2-cell. Portugaliae mathematica, Tome 21 (1962) no. 2, pp. 93-98. http://geodesic.mathdoc.fr/item/PORMA_1962__21_2_114881/