%0 Journal Article %A Erik Balslev %T The Singular Spectrum of Elliptic Differential Operators in Lp (Rn). %J Mathematica Scandinavica %D 1966 %P 193-210 %V 19 %I mathdoc %U http://geodesic.mathdoc.fr/item/MS2_1966__19_165970/ %F MS2_1966__19_165970