TY - JOUR AU - Yu. I. Polyakov TI - Algorithm of Rayleigh--Schr\"odinger perturbation theory for hermitian operators JO - Teoretičeskaâ i matematičeskaâ fizika PY - 1974 SP - 374 EP - 382 VL - 18 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TMF_1974_18_3_a8/ LA - ru ID - TMF_1974_18_3_a8 ER -