@article{TMF_2022_213_1_a4,
     author = {I. A. Bobrova},
     title = {On symmetries of the~nonstationary},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {65--94},
     year = {2022},
     volume = {213},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_2022_213_1_a4/}
}