@conference{186491,
  author = {Mike Pratt},
  title = {Extension of STEP for the Representation of Parametric and Variational Models},
  year = {1996},
  month = {1996-09-01},
  publisher = {Proceedings of Workshop on CAD Tools for Products},
  url = {https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=821428},
  language = {en},
}