@misc{138756,
  author = {R Coll{eacute} and J Hutchinson and P Kotrappa},
  title = {Calibration of Electret-Based Integral Radon Monitors Using NIST Polyethylene-Encapsulated <sup>226</sup>Ra/<sup>222</sup>Rn Emanation (PERE) Standards},
  year = {1995},
  number = {100},
  month = {1995-01-01},
  publisher = {Journal of Research (NIST JRES), National Institute of Standards and Technology, Gaithersburg, MD},
  language = {en},
}