@misc{1160801,
  author = {Roger J Martin and Wilma M Osborne},
  title = {Guidance on software maintenance:},
  year = {1983},
  month = {1983-01-01 05:01:00},
  publisher = {, National Institute of Standards and Technology, Gaithersburg, MD},
  doi = {https://doi.org/10.6028/NBS.SP.500-106},
  language = {en},
}