@article{IVM_1972_8_a9,
     author = {A. P. Norden and G. N. Timofeev},
     title = {Invariant interpretations for special compositions of multidimensional spaces},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {81--89},
     publisher = {mathdoc},
     number = {8},
     year = {1972},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1972_8_a9/}
}