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@article{10_4064_cm_20_2_237_241, author = {James Keesling}, title = {Closed mappings which lower dimension}, journal = {Colloquium Mathematicum}, pages = {237--241}, publisher = {mathdoc}, volume = {20}, number = {2}, year = {1969}, doi = {10.4064/cm-20-2-237-241}, language = {en}, url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-20-2-237-241/} }
James Keesling. Closed mappings which lower dimension. Colloquium Mathematicum, Tome 20 (1969) no. 2, pp. 237-241. doi : 10.4064/cm-20-2-237-241. http://geodesic.mathdoc.fr/articles/10.4064/cm-20-2-237-241/
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