@article{ author = {bakhtiari, M., Mirzaei, R.}, title = {ACTION OF SEMISIMPLE ISOMERY GROUPS ON SOME RIEMANNIAN MANIFOLDS OF NONPOSITIVE CURVATURE}, journal = {Journal of New Researches in Mathematics}, year = {2017}, volume = {3}, issue = {3}, pages = {51-58}, doi = {}, url = {https://sanad.iau.ir/fa/Article/798772} }