To cite pcev in publications use:

Turgeon M. et al. Principal component of explained variance: An efficient and optimal data dimension reduction framework for association studies. To appear in Statistical Methods in Medical Research.

Corresponding BibTeX entry:

  @Unpublished{,
    title = {Principal component of explained variance: An efficient
      and optimal data dimension reduction framework for association
      studies.},
    author = {Maxime Turgeon and Karim Oualkacha and Antonio Ciampi and
      Golsa Dehghan and Andrea L. Benedet and Pedro Rosa-Neto and Brent
      W. Zanke and Celia M.T. Greenwood and Aurelie Labbe and {for the
      Alzheimer's Disease Neuroimaging Initiative}},
    journal = {Statistical Methods in Medical Research},
    note = {To Appear},
  }