TY - JOUR AU - Michael Meier TI - Counter-Examples to Boundary Estimates for Two-Dimensional Elliptic Systems. JO - Manuscripta mathematica PY - 1983 SP - 59 EP - 70 VL - 44 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MM2_1983__44_154959/ ID - MM2_1983__44_154959 ER -