%0 Journal Article %A Astala, Kari %A Iwaniec, Tadeusz %A Prause, István %A Saksman, Eero %T Burkholder integrals, Morrey’s problem and quasiconformal mappings %J Journal of the American Mathematical Society %D 2012 %P 507-531 %V 25 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.1090/S0894-0347-2011-00718-2/ %R 10.1090/S0894-0347-2011-00718-2 %F 10_1090_S0894_0347_2011_00718_2