TY - JOUR AU - Ronaldo Minniti AU - C. Kessler AU - P Allisy-Roberts C2 - Metrologia DA - 2014-08-01 LA - en M1 - 51 PB - Metrologia PY - 2014 TI - Comparisons of the radiation protection standards for air kerma of the NIST and the BIPM for Co60 and Cs137 gamma radiation ER -