To cite decon in publications use:

Wang X, Wang B (2011). “Deconvolution Estimation in Measurement Error Models: The R Package decon.” Journal of Statistical Software, 39(10), 1–24. doi:10.18637/jss.v039.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},
    doi = {10.18637/jss.v039.i10},
  }