@misc{1163306,
  author = {R E Michaelis and H Yakowitz},
  title = {Standard Reference Materials ::Homogeneity characterization of NBS spectrometric standards IV /},
  year = {1969},
  month = {1969-01-01 05:01:00},
  publisher = {, National Institute of Standards and Technology, Gaithersburg, MD},
  doi = {https://doi.org/10.6028/NBS.SP.260-16},
  language = {en},
}