00811nam0-22002771i-450-99000045146040332120100401131050.0000045146FED01000045146(Aleph)000045146FED0100004514620020821d1972----km-y0itay50------baengy-------001yyCausality and dispersion relationsH. M. NussenzveigNew YorkAcademic Press1972435 p.ill.24 cmMathematics in science and engineering95Nussenzveig,H.M.25171ITUNINARICAUNIMARCBK99000045146040332110 D III 276/95CNR L/19DINELDINELCausality and dispersion relations334157UNINA