Literatur
Bishop, R.L., O'Neill, B.: Manifolds of negative curvature. Transactions of the A.M.S.145, 1–49 (1969)
Dombrowski, P.: Jacobi fields, totally geodesic foliations, and geodesic differential forms. Resultate der Mathematik (erscheint demnächst)
Kobayashi, S., Nomizu, K.: Foundations of differential geometry. Band 1 u. 2. New York: Interscience Publishers 1963 und 1969
Nomizu, K.: Lie groups and differential geometry. Publ. Math. Soc. Japan, Tokyo 1956
Nomizu, K., Yano, K.: On circles and spheres in Riemannian geometry. Math. Ann.210, 163–170 (1974)
de Rham, G.: Sur la réductibilité d'un espace de Riemann. Comment. Math. Helv.26, 328–344 (1952)
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Hiepko, S. Eine innere Kennzeichnung der verzerrten Produkte. Math. Ann. 241, 209–215 (1979). https://doi.org/10.1007/BF01421206
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DOI: https://doi.org/10.1007/BF01421206