To cite package ‘PROPER’ in publications use:

  Hao Wu, Chi Wang, Zhijin Wu (2014): PROPER: Comprehensive Power
  Evaluation for Differential Expression using RNA-seq. Bioinformatics.
  doi:10.1093/bioinformatics/btu640

A BibTeX entry for LaTeX users is

  @Article{,
    title = {PROPER: Comprehensive Power Evaluation for Differential Expression using RNA-seq},
    author = {Hao Wu and Chi Wang and Zhijin Wu},
    year = {2014},
    journal = {Bioinformatics},
    doi = {10.1093/bioinformatics/btu640},
  }