Gray, John W. Some global properties of contact structures. (English) Zbl 0092.39301 Ann. Math. (2) 69, 421-450 (1959). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 3 ReviewsCited in 144 Documents Keywords:Riemannian manifolds PDF BibTeX Cite \textit{J. W. Gray}, Ann. Math. (2) 69, 421--450 (1959; Zbl 0092.39301) Full Text: DOI