TY - JOUR AU - Denis Bergeron AU - Jeffrey Cessna AU - Ryan Fitzgerald AU - Leticia Pibida AU - Brian Zimmerman AU - Carine Michotte AU - Manuel Nonis AU - Andrew Fenwick AU - Kelly Ferreira AU - John Keightley C2 - Metrologia DA - 2018-01-01 DO - https://doi.org/10.1088/0026-1394/54/1A/06011 LA - en M1 - 54 PB - Metrologia PY - 2018 TI - Activity measurements of the radionuclides 18F and 64Cu for the NIST, USA in the ongoing comparisons BIPM.RI(II)-K4.F-18 and BIPM.RI(II)-K4.Cu-64 ER -