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@article{10_4064_cm_7_1_41_43, author = {C. Bessaga}, title = {On the converse of {Banach} "fixed-point principle"}, journal = {Colloquium Mathematicum}, pages = {41--43}, publisher = {mathdoc}, volume = {7}, number = {1}, year = {1959}, doi = {10.4064/cm-7-1-41-43}, language = {en}, url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-7-1-41-43/} }
C. Bessaga. On the converse of Banach "fixed-point principle". Colloquium Mathematicum, Tome 7 (1959) no. 1, pp. 41-43. doi : 10.4064/cm-7-1-41-43. http://geodesic.mathdoc.fr/articles/10.4064/cm-7-1-41-43/
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