TY - JOUR AU - Pibida, Leticia AU - Unterweger, Michael AU - Karam, Lisa C2 - Applied Radiation and Isotopes DA - 2006-01-01 LA - en M1 - 64 PB - Applied Radiation and Isotopes PY - 2006 TI - Development of Gamma-ray Emitting Test Sources for Portal Monitors ER -