TY - JOUR AU - Essex, Richard AU - Mann, Jacqueline AU - Williams, Ross AU - Kinman, William AU - Hubert, Amelie AU - Bennett, Megan C2 - Applied Radiation and Isotopes DA - 2017-07-27 00:07:00 DO - https://doi.org/10.1016/j.apradiso.2017.07.050 LA - en M1 - 134 PB - Applied Radiation and Isotopes PY - 2017 TI - New thorium-229 standard reference material ER -