%0 Journal Article %A Teresa RegiƄska %T Approximate solving of ill posed problems %J Mathematica Applicanda %D 1989 %P 119-135 %V 17 %N 31 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.14708/ma.v17i31.1768/ %R 10.14708/ma.v17i31.1768 %G pl %F 10_14708_ma_v17i31_1768