%0 Journal Article %A Ng, Tze Beng %T Frame Fields on Manifolds %J Canadian journal of mathematics %D 1986 %P 232-256 %V 38 %N 1 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1986-011-0/ %R 10.4153/CJM-1986-011-0 %F 10_4153_CJM_1986_011_0