RT Journal Article SR Electronic T1 History Corner: How Cesium-137 Was Discovered by an Undergraduate Student JF Journal of Nuclear Medicine JO J Nucl Med FD Society of Nuclear Medicine SP 18N OP 31N VO 40 IS 4 A1 Dennis D. Patton YR 1999 UL http://jnm.snmjournals.org/content/40/4/18N.abstract AB