RT Journal Article SR Electronic T1 Long-Range Planning: Past, Present, and Future JF Journal of Nuclear Medicine Technology JO J. Nucl. Med. Technol. FD Society of Nuclear Medicine SP 235 OP 239 VO 8 IS 4 A1 Alexander, George W. YR 1980 UL http://tech.snmjournals.org/content/8/4/235.abstract AB