Popovic, S The longitudinal and lateral response of multichannel focusing collimators. [electronic resource] - The International journal of applied radiation and isotopes Apr 1968 - 303-12 p. digital Publication Type: Journal Article ISSN: 0020-708X Standard No.: 10.1016/0020-708x(68)90174-9 doi Subjects--Topical Terms: Iodine IsotopesRadiation Monitoring--instrumentation