Cold spot in the uniform Co-57 image may not necessarily be due to photomultiplier tube failure or variations in photomultiplier tube tuning: A technical note
2012 ◽
Vol 21
(1)
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pp. 11-16
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1998 ◽
Vol 47
(3)
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pp. 153-160
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1984 ◽
Vol 131
(3)
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pp. 99
2014 ◽
Vol 75
(S 02)
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