@article{GDZPPN00209763X, title = {G-actions and the Fundamental Group.}, journal = {Inventiones mathematicae}, volume = {64}, year = {1981}, pages = {411-424}, zbl = {0519.57034}, url = {http://dml.mathdoc.fr/item/GDZPPN00209763X} }
Browder, William; Hsiang, Wu-Chung. G-actions and the Fundamental Group.. Inventiones mathematicae, Tome 64 (1981) pp. 411-424. http://gdmltest.u-ga.fr/item/GDZPPN00209763X/