@misc{188906,
  author = {Don Libes},
  title = {The NIST STEP Part 21 Exchange File Toolkit: An Update},
  year = {1993},
  month = {1993-01-01},
  publisher = {NIST Interagency/Internal Report (NISTIR), National Institute of Standards and Technology, Gaithersburg, MD},
  language = {en},
}