%0 Journal Article %A Lars Inge Hedberg %T Non-Linear Potentials and Approximation in the Mean by Analytic Functions. %J Mathematische Zeitschrift %D 1972 %P 299-320 %V 129 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZ_1972__129_171838/ %F MZ_1972__129_171838