TY - JOUR AU - Walter Schempp TI - Group Actions on the Solutions of Linear Partial Differential Equations. JO - Mathematische Zeitschrift PY - 1976 SP - 111 EP - 116 VL - 151 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZ_1976__151_172435/ ID - MZ_1976__151_172435 ER -