@misc{misc,
  author = {Kevin Brady and John Cugini and Qiming Wang},
  title = {User{\textquoteright}s Guide for the PHIGS Validation Tests (Version 2.1)},
  year = {1994},
  month = {1994-04-01},
  publisher = {NIST Interagency/Internal Report (NISTIR), National Institute of Standards and Technology, Gaithersburg, MD},
  language = {en},
}