%0 Journal Article %A Yafaev, D. %T Scattering theory: Some old and new problems %J Documenta mathematica %D 1998 %P 87-96 %V ICM Berlin 1998, Vol. III %I mathdoc %U http://geodesic.mathdoc.fr/item/DOCMA_1998__S9__a69/ %G en %F DOCMA_1998__S9__a69