%0 Journal Article %A Allan Greenleaf, Andreas Seeger %T On oscillatory integral operators with folding canonical relations %J Studia Mathematica %D 1999 %P 125-139 %V 132 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/sm-132-2-125-139/ %R 10.4064/sm-132-2-125-139 %G en %F 10_4064_sm_132_2_125_139