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@article{10_4064_cm_23_1_61_63, author = {A. Gmurczyk}, title = {Approximative retracts and fundamental retracts}, journal = {Colloquium Mathematicum}, pages = {61--63}, publisher = {mathdoc}, volume = {23}, number = {1}, year = {1971}, doi = {10.4064/cm-23-1-61-63}, language = {en}, url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-23-1-61-63/} }
A. Gmurczyk. Approximative retracts and fundamental retracts. Colloquium Mathematicum, Tome 23 (1971) no. 1, pp. 61-63. doi : 10.4064/cm-23-1-61-63. http://geodesic.mathdoc.fr/articles/10.4064/cm-23-1-61-63/
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