To cite the FlexParamCurve package in publications use:

Oswald, S.A., Nisbet I.C.T., Chiaradia, A. and Arnold, J.M. (2012) FlexParamCurve: R package for flexible fitting of nonlinear parametric curves Methods in Ecology and Evolution. 3:1073--1077

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

Corresponding BibTeX entry:

  @Article{,
    author = {Stephen A. Oswald and Ian C. T. Nisbet and Andre
      Chiaradia and Jennifer M. Arnold},
    title = {FlexParamCurve: R package for flexible fitting of
      nonlinear parametric curves},
    journal = {Methods in Ecology and Evolution},
    year = {2012},
    volume = {3},
    pages = {1073--1077},
    url =
      {http://onlinelibrary.wiley.com/doi/10.1111/j.2041-210X.2012.00231.x/abstract},
  }