%0 Journal Article %A Charles Fefferman %T Estimates for double Hilbert transform %J Studia Mathematica %D 1972 %P 1-15 %V 44 %N 1 %U http://geodesic.mathdoc.fr/articles/10.4064/sm-44-1-1-15/ %R 10.4064/sm-44-1-1-15 %G en %F 10_4064_sm_44_1_1_15