%0 Journal Article %A M. A. Abdrachmanov %T $L_2$-estimates for solutions of the general boundary-value problems for the equations with mixed parabolic-elliptic structure %J Zapiski Nauchnykh Seminarov POMI %D 1992 %P 4-27 %V 197 %I mathdoc %U http://geodesic.mathdoc.fr/item/ZNSL_1992_197_a0/ %G ru %F ZNSL_1992_197_a0