%0 Journal Article
%A Martin Schechter
%T Scattering Theory for Elliptic Operators of Arbitrary Order
%J Commentarii mathematici Helvetici
%D 1974
%P 84-113
%V 49
%I mathdoc
%U http://geodesic.mathdoc.fr/item/CMH_1974__49_139572/
%F CMH_1974__49_139572