To cite package ‘PureCN’ in publications use:

  Riester M, Singh A, Brannon A, Yu K, Campbell C, Chiang D, Morrissey
  M (2016). “PureCN: Copy number calling and SNV classification using
  targeted short read sequencing.” _Source Code for Biology and
  Medicine_, *11*, 13. doi:10.1186/s13029-016-0060-z
  <https://doi.org/10.1186/s13029-016-0060-z>.

A BibTeX entry for LaTeX users is

  @Article{,
    author = {Markus Riester and Angad Singh and A. Rose Brannon and Kun Yu and Catarina D. Campbell and Derek Y. Chiang and Michael Morrissey},
    title = {PureCN: Copy number calling and SNV classification using 
         targeted short read sequencing},
    year = {2016},
    volume = {11},
    pages = {13},
    doi = {10.1186/s13029-016-0060-z},
    journal = {Source Code for Biology and Medicine},
  }