Brown Thomas, J.
, Duewer, D.
, Kline, M.
, May, W.
and Craft, N.
(2016),
NIST Micronutrients Measurement Quality Assurance Program Winter, Spring, and Fall 1989 Comparability Studies: Results for Round Robins XV, XVI, and XVII Fat-Soluble Vitamins and Carotenoids in Human Serum:, , National Institute of Standards and Technology, Gaithersburg, MD, [online], https://doi.org/10.6028/NIST.IR.7880-35
(Accessed January 22, 2025)