To cite decon in publications use:

Xiao-Feng Wang, Bin Wang (2011). Deconvolution Estimation in Measurement Error Models: The R Package decon. Journal of Statistical Software, 39(10), 1-24. URL http://www.jstatsoft.org/v39/i10/.

Corresponding BibTeX entry:

  @Article{,
    title = {Deconvolution Estimation in Measurement Error Models: The
      {R} Package {decon}},
    author = {Xiao-Feng Wang and Bin Wang},
    journal = {Journal of Statistical Software},
    year = {2011},
    volume = {39},
    number = {10},
    pages = {1--24},
    url = {http://www.jstatsoft.org/v39/i10/},
  }