TY - RPRT TI - Bilateral comparison of the activity concentration for a standardized 137Cs solution between the National Institute of Standards Technology (NIST) and the National Institute of Nuclear Research (ININ) AU - Pibida, Leticia AU - Regits, Willie AU - Garcla Diaz, Olga AU - Martinez Ayala, Lucia AU - Mendoza Nava, Hector PY - 2021 PB - National Institute of Standards and Technology (U.S.) CY - Gaithersburg, MD SN - NIST TN 2192 DO - 10.6028/NIST.TN.2192 ER -