@misc{773131,
  author = {A. Perrey and Barry Bell},
  title = {Performance Evaluation of Dialed Number Recorders},
  year = {1991},
  month = {1991-12-01 12:12:00},
  publisher = {NIST Interagency/Internal Report (NISTIR), National Institute of Standards and Technology, Gaithersburg, MD},
  language = {en},
}