@article{TMF_1973_16_1_a7,
     author = {M. A. Markov and V. P. Frolov},
     title = {Closed universes containing sources of a massive vector field},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {70--76},
     year = {1973},
     volume = {16},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1973_16_1_a7/}
}