@article{TMF_1970_4_1_a12,
     author = {Yu. A. Tserkovnikov},
     title = {Spectrum of elementary excitations of a~nonideal {Bose} gas},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {119--142},
     publisher = {mathdoc},
     volume = {4},
     number = {1},
     year = {1970},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1970_4_1_a12/}
}