@misc{1186891,
  author = {P A Pella and E C Kuehner and W A Cassatt},
  title = {Development of thin calibration standards for x-ray fluorescence analysis:},
  year = {1976},
  month = {1976-01-01 05:01:00},
  publisher = {, National Institute of Standards and Technology, Gaithersburg, MD},
  doi = {https://doi.org/10.6028/NBS.IR.75-970},
  language = {en},
}