@inbook{70816,
  author = {Michael Mitch and Christopher Soares},
  title = {Primary Standards for Brachytherapy Sources},
  year = {2009},
  month = {2009-06-01},
  publisher = {2009 AAPM Summer School, AAPM, College Park, MD},
  url = {https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=901166},
  language = {en},
}