@misc{208311,
  author = {Jeanice Brown and David Duewer and Margaret Kline and Willie May and Sam Margolis and Neal Craft and Katherine Sharpless},
  title = {NIST Micronutrients Measurement Quality Assurance Program Winter, Spring, and Fall 1990 Comparability Studies: Results for Round Robins XVIII, XIX, and XX Fat-Soluble Vitamins and Carotenoids in Human Serum},
  year = {2015},
  month = {2015-09-29},
  publisher = {NIST Interagency/Internal Report (NISTIR), National Institute of Standards and Technology, Gaithersburg, MD},
  doi = {https://doi.org/10.6028/NIST.IR.7880-34},
  language = {en},
}