00949nam0-22003491i-450 99000084474040332120200205105229.03-540-09704-X000084474FED01000084474(Aleph)000084474FED0100008447420001010d1979----km-y0itay50------baengDEy-------001yyElliptic pseudo-differential operatorsan abstract theoryH.O. CordesBerlinSpringer1979331 p.24 cmLecture Notes in Mathematics756515.353Cordes,H.O.41534ITUNINARICAUNIMARCBK99000084474040332102 27 D 213223FINBNC-20-(75619897MA1MA1FINBNElliptic pseudo-differential operators348747UNINAING01