Template:Gray1959
From Manifold Atlas
J. W. Gray, Some global properties of contact structures, Ann. of Math. (2) 69 (1959), 421–450. MR0112161 (22 #3016) Zbl 0092.39301
J. W. Gray, Some global properties of contact structures, Ann. of Math. (2) 69 (1959), 421–450. MR0112161 (22 #3016) Zbl 0092.39301