%0 Journal Article %A A. Azzam %T Smoothness properties of solutions of mixed boundary value problems for elliptic equations in sectionally smooth n-dimensional domains %J Annales Polonici Mathematici %D 1981 %P 81-93 %V 40 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/ap-40-1-81-93/ %R 10.4064/ap-40-1-81-93 %G en %F 10_4064_ap_40_1_81_93