TY - JOUR AU - K. A. Sveshnikov TI - Covariant perturbation theory in the neighborhood of a~classical solution JO - Teoretičeskaâ i matematičeskaâ fizika PY - 1983 SP - 361 EP - 384 VL - 55 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TMF_1983_55_3_a3/ LA - ru ID - TMF_1983_55_3_a3 ER -