@inproceedings{takayuki2013classification,
title={CLASSIFICATION OF SEMISIMPLE SYMMETRIC SPACES WITH PROPER SL(2, R)-ACTIONS},
author={Takayuki Okuda},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20160914080100017011978},
booktitle={Journal of Differential Geometry},
volume={94},
number={2},
pages={301-342},
year={2013},
}
Takayuki Okuda. CLASSIFICATION OF SEMISIMPLE SYMMETRIC SPACES WITH PROPER SL(2, R)-ACTIONS. 2013. Vol. 94. In Journal of Differential Geometry. pp.301-342. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20160914080100017011978.