@misc{1149586,
  author = {Sandy Ressler},
  title = {The National PDES Testbed mail server::user's guide},
  year = {1991},
  month = {1991-01-01 05:01:00},
  publisher = {, National Institute of Standards and Technology, Gaithersburg, MD},
  doi = {https://doi.org/10.6028/NIST.IR.4508},
  language = {en},
}