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@article{CMH_1975__50_139612, author = {Su-Shing Chen}, title = {Complete {Homogeneous} {Riemannian} {Manifolds} of {Negative} {Sectional} {Curvature.}}, journal = {Commentarii mathematici Helvetici}, pages = {115--122}, publisher = {mathdoc}, volume = {50}, year = {1975}, zbl = {0301.53029}, url = {http://geodesic.mathdoc.fr/item/CMH_1975__50_139612/} }
Su-Shing Chen. Complete Homogeneous Riemannian Manifolds of Negative Sectional Curvature.. Commentarii mathematici Helvetici, Tome 50 (1975), pp. 115-122. http://geodesic.mathdoc.fr/item/CMH_1975__50_139612/