@article{TMF_1978_37_2_a4,
     author = {A. A. Grib and V. M. Mostepanenko and V. M. Frolov},
     title = {Spontaneous breaking of $CP$-symmetry in a~nonstationary isotropic metric},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {212--223},
     publisher = {mathdoc},
     volume = {37},
     number = {2},
     year = {1978},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1978_37_2_a4/}
}