00740nam0-22002651i-450-990001031100403321000103110FED01000103110(Aleph)000103110FED0100010311020000920d1960----km-y0itay50------baengAdvances in electronics and electron physicsVol. XIIIL. MartonNew YorkAcademic Press1960Fisica elettronica537.5Marton,L.14802ITUNINARICAUNIMARCBK99000103110040332131A-005.0032039FI1FI1Advances in electronics and electron physics335370UNINAING01