%0 Journal Article %A A. Calderón %A A. Zygmund %T Local properties of solutions of elliptic partial differential equations %J Studia Mathematica %D 1961 %P 181-225 %V 20 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/sm-20-2-181-225/ %R 10.4064/sm-20-2-181-225 %G en %F 10_4064_sm_20_2_181_225