@article{10_4064_sm_109_2_105_131,
     author = {Steve Hofmann},
     title = {On certain nonstandard {Calder\'on-Zygmund} operators},
     journal = {Studia Mathematica},
     pages = {105--131},
     publisher = {mathdoc},
     volume = {109},
     number = {2},
     year = {1994},
     doi = {10.4064/sm-109-2-105-131},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm-109-2-105-131/}
}