@misc{76801,
  author = {Jeffrey Bullard},
  title = {User's Guide to the Virtual Cement and Concrete Testing Laboratory Version 1.1},
  year = {2003},
  month = {2003-03-01},
  publisher = {NIST Interagency/Internal Report (NISTIR), National Institute of Standards and Technology, Gaithersburg, MD},
  url = {https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=860490},
  language = {en},
}