@misc{1150121,
  author = {John Cugini and Lynne S.Rosenthal},
  title = {Design issues for conformance testing of the PHIGS standard:},
  year = {1990},
  month = {1990-01-01 05:01:00},
  publisher = {, National Institute of Standards and Technology, Gaithersburg, MD},
  doi = {https://doi.org/10.6028/NIST.IR.4384},
  language = {en},
}