1. The Cartan structural equations in classical Riemannian geometry;Ambrose;J. Indian Math. Soc. (N.S.),1960
2. The index theorem in Riemannian geometry;Ambrose;Annals of Mathematics,1961
3. Some theorems on the isometric imbedding of compact Riemannian manifolds in Euclidean spaces;Chern;Annals of Math.,1952
4. Minimum and conjugate points in symmetric spaces;Crittenden;Canad. Journ. Math.,1962
5. Differential geometry and symmetric spaces;Helgason,1962