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@article{10_4064_fm_85_2_165_175, author = {Rastislav Telg\'arsky}, title = {Closure-preserving covers}, journal = {Fundamenta Mathematicae}, pages = {165--175}, publisher = {mathdoc}, volume = {85}, number = {2}, year = {1974}, doi = {10.4064/fm-85-2-165-175}, language = {en}, url = {http://geodesic.mathdoc.fr/articles/10.4064/fm-85-2-165-175/} }
Rastislav Telgársky. Closure-preserving covers. Fundamenta Mathematicae, Tome 85 (1974) no. 2, pp. 165-175. doi : 10.4064/fm-85-2-165-175. http://geodesic.mathdoc.fr/articles/10.4064/fm-85-2-165-175/
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