%0 Journal Article %A Jouko Tervo %T On the existence and regularity of solutions of linear equations in spaces $H_k(G)$ %J Annales Polonici Mathematici %D 1989 %P 261-278 %V 50 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/ap-50-3-261-278/ %R 10.4064/ap-50-3-261-278 %G en %F 10_4064_ap_50_3_261_278