00738nam0-22002651i-450-990001031130403321000103113FED01000103113(Aleph)000103113FED0100010311320000920d1969----km-y0itay50------baengAdvances in electronics and electron physicsVol. 26L. MartonNew YorkAcademic Press1969Fisica elettronica537.5Marton,L.14802ITUNINARICAUNIMARCBK99000103113040332131A-005.0046688FI1FI1Advances in electronics and electron physics335370UNINAING01