@misc{1157281,
  author = {K B Peterson},
  title = {Investigation of the hydrogen source for masers:},
  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.TN.1315},
  language = {en},
}