Template:Wang1974
From Manifold Atlas
K. Wang, Free actions and the group of diffeomorphisms, Trans. Amer. Math. Soc. 191 (1974), 113–127. MR0356106 (50 #8577)
K. Wang, Free actions and the group of diffeomorphisms, Trans. Amer. Math. Soc. 191 (1974), 113–127. MR0356106 (50 #8577)