@misc{1163201,
  author = {John Mandel and Donald S Young and J Paul Cali},
  title = {Standard Reference Materials:A reference method for the determination of calcium in serum},
  year = {1972},
  month = {1972-01-01 05:01:00},
  publisher = {, National Institute of Standards and Technology, Gaithersburg, MD},
  doi = {https://doi.org/10.6028/NBS.SP.260-36},
  language = {en},
}