@article{10_4064_cm_37_1_51_58, author = {Louis F. McAuley}, title = {A characterization of light open mappings and the existence of group actions}, journal = {Colloquium Mathematicum}, pages = {51--58}, publisher = {mathdoc}, volume = {37}, number = {1}, year = {1971}, doi = {10.4064/cm-37-1-51-58}, language = {en}, url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-37-1-51-58/} }