To cite package 'qrnn' in publications use:

Cannon, A.J., 2011. Quantile regression neural networks: implementation in R and application to precipitation downscaling. Computers & Geosciences, 37: 1277-1284. doi:10.1016/j.cageo.2010.07.005

Corresponding BibTeX entry:

  @Article{,
    title = {Quantile regression neural networks: implementation in R
      and application to precipitation downscaling},
    author = {Alex J. Cannon},
    year = {2011},
    journal = {Computers \& Geosciences},
    volume = {37},
    pages = {1277-1284. doi:10.1016/j.cageo.2010.07.005},
  }