To cite nlsMicrobio in publications use:

Baty F, Delignette-Muller M (2014). nlsMicrobio: data sets and nonlinear regression models dedicated to predictive microbiology. R package version 0.0-1.

Corresponding BibTeX entry:

  @Manual{,
    title = {nlsMicrobio: data sets and nonlinear regression models
      dedicated to predictive microbiology},
    author = {Florent Baty and Marie-Laure Delignette-Muller},
    year = {2014},
    note = {R package version 0.0-1},
  }