1. Berger, M.: Les espaces symétriques noncompacts. Ann. sci. de l.N.S. 3 74, 85–177 (1957)
2. Brion, M.: Classification des espaces homogènes sphériques. Compositio Math. 63, 189–208 (1987)
3. Čap, A., Slovák, J.: Parabolic Geometries I: Background and General Theory. Mathematical Surveys and Monographs, vol. 154. American Mathematical Society, Providence (2009)
4. Chen, Z., Wolf, J.A.: Pseudo-Riemannian weakly symmetric manifolds. Ann. Glob. Anal. Geom. 41, 381–390 (2012)
5. Knop, F., Krötz, B., Pecher, T., Schlichtkrull, H.: Classification of reductive real spherical pairs, I: the simple case.
arXiv:1609.00963
(to appear)