%0 Journal Article %A A. M. Kolchuzhkin %T Application of formulas of perturbation theory for a modification of estimates in calculations of radiation fields by the Monte Carlo method %J Doklady Akademii Nauk %D 1981 %P 346-348 %V 256 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1981_256_2_a21/ %G ru %F DAN_1981_256_2_a21