@article{TMF_1978_35_1_a11,
     author = {V. F. Los'},
     title = {Superoperator method in the theory of an~oscillator which interacts weakly with a~medium. {I.~General} results},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {113--126},
     publisher = {mathdoc},
     volume = {35},
     number = {1},
     year = {1978},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1978_35_1_a11/}
}