TY - JOUR AU - Astala, Kari AU - Iwaniec, Tadeusz AU - Prause, István AU - Saksman, Eero TI - Burkholder integrals, Morrey’s problem and quasiconformal mappings JO - Journal of the American Mathematical Society PY - 2012 SP - 507 EP - 531 VL - 25 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.1090/S0894-0347-2011-00718-2/ DO - 10.1090/S0894-0347-2011-00718-2 ID - 10_1090_S0894_0347_2011_00718_2 ER -