TY - JOUR AU - Lars Inge Hedberg TI - Non-Linear Potentials and Approximation in the Mean by Analytic Functions. JO - Mathematische Zeitschrift PY - 1972 SP - 299 EP - 320 VL - 129 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZ_1972__129_171838/ ID - MZ_1972__129_171838 ER -