@article{IVM_1992_5_a0,
     author = {D. V. Alekseevskii and M. M. Graev},
     title = {Twistors of {a~Riemannian} manifold, and {CR-structures}},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {3--19},
     publisher = {mathdoc},
     number = {5},
     year = {1992},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1992_5_a0/}
}