@conference{conference,
  author = {Michael McLay and KC Morris},
  title = {The NIST STEP Class Library STEP Into the Future},
  year = {1990},
  month = {1990-08-01 00:08:00},
  publisher = {Proceedings of the C++ at Work {\textquoteright}90 Conference, , USA},
  url = {https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=821348},
  language = {en},
}