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@article{10_4064_fm_108_2_109_118, author = {J. Chartonik}, title = {Contractibility and continous selections}, journal = {Fundamenta Mathematicae}, pages = {109--118}, publisher = {mathdoc}, volume = {108}, number = {2}, year = {1980}, doi = {10.4064/fm-108-2-109-118}, language = {en}, url = {http://geodesic.mathdoc.fr/articles/10.4064/fm-108-2-109-118/} }
J. Chartonik. Contractibility and continous selections. Fundamenta Mathematicae, Tome 108 (1980) no. 2, pp. 109-118. doi : 10.4064/fm-108-2-109-118. http://geodesic.mathdoc.fr/articles/10.4064/fm-108-2-109-118/
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