Baer, Ines, Lutgart van Nevel, Beatriz de la Calle, and Philip Taylor. “IMEP Interlaboratory Comparisons – A Tool to Establish Confidence in Measurements”. CHIMIA 63, no. 10 (October 28, 2009): 681. Accessed April 19, 2024. https://www.chimia.ch/chimia/article/view/2009_681.