@article{DAN_1967_173_3_a6,
     author = {I. L. Kantor and A. I. Sirota and A. S. Solodovnikov},
     title = {A class of symmetric spaces with an extensible group of motions and a generalization of the {Poincar\'e} model},
     journal = {Doklady Akademii Nauk},
     pages = {511--514},
     publisher = {mathdoc},
     volume = {173},
     number = {3},
     year = {1967},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1967_173_3_a6/}
}