@article{IVM_1994_2_a6,
     author = {V. R. Kaigorodov},
     title = {Local symmetries and covariant integration for algebraically special gravitational fields},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {30--36},
     publisher = {mathdoc},
     number = {2},
     year = {1994},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1994_2_a6/}
}