%0 Journal Article %A Gulgowski, Jacek %T Bernstein approximations of Dirichlet problems for elliptic operators on the plane %J Electronic Journal of Differential Equations %D 2007 %V 2007 %I mathdoc %U http://geodesic.mathdoc.fr/item/EJDE_2007__2007__a252/ %G en %F EJDE_2007__2007__a252