@misc{1129521,
  author = {Cheryl Helsing and Marianne Swanson and Mary Anne Todd},
  title = {Executive guide to the protection of information resources:},
  year = {1989},
  month = {1989-01-01 05:01:00},
  publisher = {, National Institute of Standards and Technology, Gaithersburg, MD},
  doi = {https://doi.org/10.6028/NIST.SP.500-169},
  language = {en},
}