To cite package 'qmap' in publications use:

Gudmundsson, L. (2014). qmap: Statistical transformations for post-processing climate model output. R package version 1.0-2.
Gudmundsson, L.; Bremnes, J. B.; Haugen, J. E. & Engen-Skaugen, T. Technical Note: Downscaling RCM precipitation to the station scale using statistical transformations - a comparison of methods. Hydrology and Earth System Sciences, 2012, 16, 3383-3390, doi:10.5194/hess-16-3383-2012.

Corresponding BibTeX entries:

  @Manual{,
    title = {qmap: Statistical transformations for post-processing
      climate model output},
    author = {Lukas Gudmundsson},
    year = {2014},
    note = {R package version 1.0-2},
  }
  @Article{,
    title = {Technical Note: Downscaling RCM precipitation to the
      station scale using statistical transformations - a comparison of
      methods},
    author = {L. Gudmundsson and J. B. Bremnes and J. E. Haugen and T.
      Engen-Skaugen},
    journal = {Hydrology and Earth System Sciences},
    year = {2012},
    volume = {16},
    pages = {3383-3390},
    number = {9},
    doi = {10.5194/hess-16-3383-2012},
  }