%0 Journal Article %A A. O. Babayan %A S. O. Abelyan %T Defect Numbers of the Dirichlet Problem for a Properly Elliptic Sixth-Order Equation %J Matematičeskie zametki %D 2018 %P 345-355 %V 104 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZM_2018_104_3_a2/ %G ru %F MZM_2018_104_3_a2