@misc{1163356,
  author = {R L McKenzie and A W Hartman},
  title = {Standard Reference Materials ::Description of the SRM 1965 microsphere slide/},
  year = {1988},
  month = {1988-01-01 05:01:00},
  publisher = {, National Institute of Standards and Technology, Gaithersburg, MD},
  doi = {https://doi.org/10.6028/NBS.SP.260-107},
  language = {en},
}