@misc{1160281,
  author = {Zella G Ruthberg and Robert G McKenzie},
  title = {Audit and evaluation of computer security II:},
  year = {1980},
  month = {1980-01-01 05:01:00},
  publisher = {, National Institute of Standards and Technology, Gaithersburg, MD},
  doi = {https://doi.org/10.6028/NBS.SP.500-57},
  language = {en},
}