@article{TMF_1994_100_3_a11,
     author = {V. P. Belov},
     title = {Groups of spacetime transformations and symmetries of four-dimensional {spacetime.~I}},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {458--475},
     publisher = {mathdoc},
     volume = {100},
     number = {3},
     year = {1994},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1994_100_3_a11/}
}