@article{10_4064_sm_20_2_181_225,
     author = {A. Calder\'on and A. Zygmund},
     title = {Local properties of solutions of elliptic partial differential equations},
     journal = {Studia Mathematica},
     pages = {181--225},
     publisher = {mathdoc},
     volume = {20},
     number = {2},
     year = {1961},
     doi = {10.4064/sm-20-2-181-225},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm-20-2-181-225/}
}