@article{EJDE_2007__2007__a152,
     author = {Gulgowski, Jacek},
     title = {Bernstein approximations of {Dirichlet} problems for elliptic operators on the plane},
     journal = {Electronic Journal of Differential Equations},
     publisher = {mathdoc},
     volume = {2007},
     year = {2007},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJDE_2007__2007__a152/}
}