01039nam0-22003011i-450-990001077480403321000107748FED01000107748(Aleph)000107748FED0100010774820000920d1971----km-y0itay50------baengTroubles in the External Field Problem for Invariant Wave EquationsLectures from the Coral Gables Conference on Fundamental Interactions at High Energy, January 20-22, 1971A.S. WightmanNew YorkGordon and Breach1971Tracts in mathematics and natural sciences4Teoria dei campiTeoria dello scatteringTeoria dei molti corpi530.143Wightman,Arthur Strong46617ITUNINARICAUNIMARCBK99000107748040332122A-1729986FI1FI1Troubles in the External Field Problem for Invariant Wave Equations336547UNINAING01