TY - JOUR AU - V. F. Los' TI - Superoperator method in the theory of an~oscillator which interacts weakly with a~medium. I.~General results JO - Teoretičeskaâ i matematičeskaâ fizika PY - 1978 SP - 113 EP - 126 VL - 35 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TMF_1978_35_1_a11/ LA - ru ID - TMF_1978_35_1_a11 ER -