%0 Journal Article %A Michael Christ %A Alexander Nagel %A Elias M. Stein %A Stephen Wainger %T Singular and maximal Radon transforms: Analysis and geometry %J Annals of mathematics %D 1999 %V 150 %N 2 %U http://geodesic.mathdoc.fr/articles/10.2307/121088/ %R 10.2307/121088 %F 10_2307_121088