%0 Journal Article %A I. N. Lanin %T On a priori estimates for the Tricomi and the Dirichlet problem for a certain equation with degeneracy of the type and of the order %J Differencialʹnye uravneniâ %D 1976 %P 89-96 %V 12 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1976_12_1_a10/ %G ru %F DE_1976_12_1_a10