00738nam0-22002651i-450-990001031090403321000103109FED01000103109(Aleph)000103109FED0100010310920000920d1959----km-y0itay50------baengAdvances in electronics and electron physicsVol. XIL. MartonNew YorkAcademic Press1959Fisica elettronica537.5Marton,L.14802ITUNINARICAUNIMARCBK99000103109040332131A-005.0011550FI1FI1Advances in electronics and electron physics335370UNINAING01