%0 Journal Article %A Doktor, Pavel %A Ženíšek, Alexander %T The density of infinitely differentiable functions in Sobolev spaces with mixed boundary conditions %J Applications of Mathematics %D 2006 %P 517-547 %V 51 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.1007/s10492-006-0019-5/ %R 10.1007/s10492-006-0019-5 %G en %F 10_1007_s10492_006_0019_5