@article{IVM_1990_12_a2,
     author = {T. M. Boguslavskaya and M. A. Polovtseva and T. A. Timoshenko},
     title = {Invariant {Riemannian} and {pseudo-Riemannian} metrics in manifolds of images of cosymmetries in projective spaces},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {21--31},
     publisher = {mathdoc},
     number = {12},
     year = {1990},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1990_12_a2/}
}