Voir la notice de l'article provenant de la source Math-Net.Ru
@article{IVM_1977_11_a18, author = {V. V. Shurygin}, title = {Totally geodesic subspaces in spaces over algebras}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {127--129}, publisher = {mathdoc}, number = {11}, year = {1977}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1977_11_a18/} }
V. V. Shurygin. Totally geodesic subspaces in spaces over algebras. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 11 (1977), pp. 127-129. http://geodesic.mathdoc.fr/item/IVM_1977_11_a18/