共 39 条
[3]
[Anonymous], 1954, Amer. J. Math., DOI [10.2307/2372397, 10.2307/23723, DOI 10.2307/23723]
[4]
[Anonymous], 1995, Aspects Math.
[5]
[Anonymous], 1986, Einstein Manifolds
[8]
BORDEMAN M, 1986, COMMUN MATH PHYS, V102, P604