TY - JOUR AU - O. M. Sizova TI - A~method for solving the $p$-adic Kolmogorov--Feller equation for an ultrametric random walk in an axially symmetric external field JO - Fundamentalʹnaâ i prikladnaâ matematika PY - 2013 SP - 197 EP - 207 VL - 18 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/FPM_2013_18_2_a15/ LA - ru ID - FPM_2013_18_2_a15 ER -