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@article{10_4064_cm_43_1_81_89, author = {T. Jakubowski}, title = {Groups acting on covering spaces}, journal = {Colloquium Mathematicum}, pages = {81--89}, publisher = {mathdoc}, volume = {43}, number = {1}, year = {1980}, doi = {10.4064/cm-43-1-81-89}, language = {en}, url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-43-1-81-89/} }
T. Jakubowski. Groups acting on covering spaces. Colloquium Mathematicum, Tome 43 (1980) no. 1, pp. 81-89. doi : 10.4064/cm-43-1-81-89. http://geodesic.mathdoc.fr/articles/10.4064/cm-43-1-81-89/
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