RT Journal Article SR Electronic T1 An Improved 137mBa Generator JF Journal of Nuclear Medicine JO J Nucl Med FD Society of Nuclear Medicine SP 608 OP 609 VO 9 IS 12 A1 Teruo Nagai A1 Kazuo Watari YR 1968 UL http://jnm.snmjournals.org/content/9/12/608.abstract AB