TY - JOUR AU - L. I. Kamynin AU - B. N. Khimchenko TI - A theorem on the interior derivative for an elliptic-parabolic equation of Kolmogorov type JO - Differencialʹnye uravneniâ PY - 1986 SP - 1400 EP - 1409 VL - 22 IS - 8 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1986_22_8_a11/ LA - ru ID - DE_1986_22_8_a11 ER -