@conference{151796,
  author = {John Horst and T Tsai},
  title = {Building and maintaining computer representations of two-dimensional mine maps},
  year = {1995},
  month = {1995-06-01},
  publisher = {Proceedings of the International Symposium on Mining Mechanization and Automation, Golden, CO},
  url = {https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=820521},
  language = {en},
}