How to cite PKgraph:

Xiaoyong Sun, Kai Wu, Dianne Cook. PKgraph: An R package for graphically diagnosing population pharmacokinetic models. Computer Methods and Programs in Biomedicine. May 7, 2011. doi:10.1016/j.cmpb.2011.03.016.

Corresponding BibTeX entry:

  @Article{,
    author = {Xiaoyong Sun and Kai Wu and Dianne Cook},
    title = {PKgraph: An R package for graphically diagnosing
      population pharmacokinetic models},
    journal = {Computer Methods and Programs in Biomedicine},
    month = {May},
    year = {2011},
    note = {doi:10.1016/j.cmpb.2011.03.016},
  }