%0 Journal Article %A Isaac Chavel %T Isotropic Jacobi Fields, and Jacobi's Equations on Riemannian Homogeneous Spaces. %J Commentarii mathematici Helvetici %D 1967 %P 237-248 %V 42 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMH_1967__42_139341/ %F CMH_1967__42_139341