@article{10_4064_sm_14_2_249_271,
     author = {A. Calder\'on and Antoni Zygmund},
     title = {Singular integrals and periodic functions},
     journal = {Studia Mathematica},
     pages = {249--271},
     year = {1953},
     volume = {14},
     number = {2},
     doi = {10.4064/sm-14-2-249-271},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm-14-2-249-271/}
}