To cite the nanop package in publications use:

Gagin A, Mullen K, Levin I (2015). nanop: Tools for Nanoparticle Simulation and Calculation of PDF and Total Scattering Structure Function. R package version 2.0-6, http://CRAN.R-project.org/package=nanop.

Gagin A, Levin I (2014). “Combined fitting of small- and wide-angle X-ray total scattering data from nanoparticles: benefits and issues.” Journal of Applied Crystallography, 47, 619–629. http://scripts.iucr.org/cgi-bin/paper?S1600576714001046.

As nanop is continually evolving, you may want to cite its version number. Find it with 'help(package=nanop)'.

Corresponding BibTeX entries:

  @Manual{,
    title = {nanop: Tools for Nanoparticle Simulation and Calculation
      of PDF and Total Scattering Structure Function},
    author = {Anton Gagin and Katharine Mullen and Igor Levin},
    year = {2015},
    note = {R package version 2.0-6},
    url = {http://CRAN.R-project.org/package=nanop},
  }
  @Article{,
    author = {Anton Gagin and Igor Levin},
    title = {Combined fitting of small- and wide-angle X-ray total
      scattering data from nanoparticles: benefits and issues},
    journal = {Journal of Applied Crystallography},
    year = {2014},
    volume = {47},
    pages = {619--629},
    url = {http://scripts.iucr.org/cgi-bin/paper?S1600576714001046},
  }