@article{10_4064_sm195_2_5,
     author = {Mar{\'\i}a Lorente and Jos\'e Mar{\'\i}a Martell and Carlos P\'erez and Mar{\'\i}a Silvina Riveros},
     title = {Generalized {H\"ormander} conditions and
 weighted endpoint estimates},
     journal = {Studia Mathematica},
     pages = {157--192},
     publisher = {mathdoc},
     volume = {195},
     number = {2},
     year = {2009},
     doi = {10.4064/sm195-2-5},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm195-2-5/}
}