TY - JOUR AU - Nečas, Jindřich AU - John, Oldřich AU - Stará, Jana TI - Counterexample to the regularity of weak solution of elliptic systems JO - Commentationes Mathematicae Universitatis Carolinae PY - 1980 SP - 145 EP - 154 VL - 21 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/CMUC_1980__21_1_a10/ LA - en ID - CMUC_1980__21_1_a10 ER -