@misc{1154916,
  author = {Kurt F J Heinrich},
  title = {Present state of the classical theory of quantitative electron probe microanalysis:},
  year = {1970},
  month = {1970-01-01 05:01:00},
  publisher = {, National Institute of Standards and Technology, Gaithersburg, MD},
  doi = {https://doi.org/10.6028/NBS.TN.521},
  language = {en},
}