Journal of Differential Geometry · 1979 · 27 citations · 5 references
5
The Einstein Tensor and Its Generalizations
David Lovelock · Journal of Mathematical Physics · 1971 · 2.9K citations · Full text
On homogeneous Riemannian manifolds
W. Ambrose, I. M. Singer · Duke Mathematical Journal · 1958 · 196 citations
Yosio Mutô · Journal of Differential Geometry · 1974 · 32 citations