TY - JOUR AU - O. Martio TI - On the Integrability of the Derivative of a Quasiregular Mapping. JO - Mathematica Scandinavica PY - 1974 SP - 43 EP - 48 VL - 35 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MS2_1974__35_166373/ ID - MS2_1974__35_166373 ER -