@misc{829501,
  author = {Mitch Trachtenberg and David Flater},
  title = {Development of Appropriate Test Markings for Optical Scan Voting Machines, Phase 1: Ballot Scanning and Collection},
  year = {2011},
  month = {2011-05-02 00:05:00},
  publisher = {NIST Voting Publications},
  url = {https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=907866},
  language = {en},
}