%0 Journal Article %A O. M. Sizova %T A method for solving the $p$-adic Kolmogorov–Feller equation for an ultrametric random walk in an axially symmetric external field %J Fundamentalʹnaâ i prikladnaâ matematika %D 2013 %P 197-207 %V 18 %N 2 %U http://geodesic.mathdoc.fr/item/FPM_2013_18_2_a15/ %G ru %F FPM_2013_18_2_a15