TY - JOUR AU - R. Z. Khas'minskii TI - Principle of Averaging for Parabolic and Elliptic Differential Equations and for Markov Processes with Small Diffusion JO - Teoriâ veroâtnostej i ee primeneniâ PY - 1963 SP - 3 EP - 25 VL - 8 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TVP_1963_8_1_a0/ LA - ru ID - TVP_1963_8_1_a0 ER -