@misc{1197056,
  author = {Shao Yang},
  title = {Calibration service for instruments that measure laser beam diameter:},
  year = {2010},
  month = {2010-01-01 05:01:00},
  publisher = {, National Institute of Standards and Technology, Gaithersburg, MD},
  doi = {https://doi.org/10.6028/NIST.SP.250-87},
  language = {en},
}