%0 Journal Article %A Martin Schechter %T Wave operators for pairs of spaces and the Klein-Gordon equation. %J Aequationes mathematicae %D 1980 %P 38-50 %V 20 %I mathdoc %U http://geodesic.mathdoc.fr/item/AM2_1980__20_182377/ %F AM2_1980__20_182377