%0 Journal Article %A F. O. Porper %T Estimates of derivatives of the fundamental solution of the Cauchy problem in the half-space $t>0$ in the case of special parabolic equations of second order %J Doklady Akademii Nauk %D 1973 %P 50-53 %V 209 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1973_209_1_a11/ %G ru %F DAN_1973_209_1_a11