%0 Journal Article %A María Lorente %A José María Martell %A Carlos Pérez %A María Silvina Riveros %T Generalized Hörmander conditions and weighted endpoint estimates %J Studia Mathematica %D 2009 %P 157-192 %V 195 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/sm195-2-5/ %R 10.4064/sm195-2-5 %G en %F 10_4064_sm195_2_5