Duewer, D.
, Margolis, S.
, Sharpless, K.
and Thomas, J.
(2013),
NIST micronutrients measurement quality assurance program winter, spring, and fall 1996 comparability studies : results for round robin XXXVI, XXXVII, and XXXVIII fat-soluble vitamins and carotenoids in human serum and round robin 9 ascorbic acid in human, , National Institute of Standards and Technology, Gaithersburg, MD, [online], https://doi.org/10.6028/NIST.IR.7880-28
(Accessed August 31, 2024)