TY - JOUR AU - N. V. Tkach TI - System of exact equations for the mass operator of quasiparticles interacting with phonons JO - Teoretičeskaâ i matematičeskaâ fizika PY - 1984 SP - 400 EP - 407 VL - 61 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TMF_1984_61_3_a7/ LA - ru ID - TMF_1984_61_3_a7 ER -