Fidler M, Xiong Y, Schoemaker R, Wilkins J, Trame M, Hooijmaijers R, Post T, Wang W (2020). nlmixr: Nonlinear Mixed Effects Models in Population Pharmacokinetics and Pharmacodynamics. R package version 1.1.1-9, https://CRAN.R-project.org/package=nlmixr.

Fidler M, Wilkins J, Hooijmaijers R, Post T, Schoemaker R, Trame M, Xiong Y, Wang W (2019). “Nonlinear Mixed-Effects Model Development and Simulation Using nlmixr and Related R Open-Sourc Packages.” CPT: Pharmacometrics \& Systems Pharmacology, 8(9), 621–633. https://doi.org/10.1002/psp4.12445.

Corresponding BibTeX entries:

  @Manual{,
    title = {{nlmixr}: Nonlinear Mixed Effects Models in Population
      Pharmacokinetics and Pharmacodynamics},
    author = {Matthew Fidler and Yuan Xiong and Rik Schoemaker and
      Justin Wilkins and Mirjam Trame and Richard Hooijmaijers and Teun
      Post and Wenping Wang},
    year = {2020},
    note = {R package version 1.1.1-9},
    url = {https://CRAN.R-project.org/package=nlmixr},
  }

  @Article{,
    title = {Nonlinear Mixed-Effects Model Development and Simulation
      Using nlmixr and Related R Open-Sourc Packages},
    author = {Matthew Fidler and Justin Wilkins and Richard
      Hooijmaijers and Teun Post and Rik Schoemaker and Mirjam Trame
      and Yuan Xiong and Wenping Wang},
    journal = {CPT: Pharmacometrics \& Systems Pharmacology},
    year = {2019},
    volume = {8},
    pages = {621--633},
    number = {9},
    month = {sep},
    abstract = {nlmixr is a free and open-source R package for fitting
      nonlinear pharmacokinetic (PK), pharmacodynamic (PD), joint
      PK-PD, and quantitative systems pharmacology mixed-effects
      models. Currently, nlmixr is capable of fitting both traditional
      compartmental PK models as well as more complex models
      implemented using ordinary differential equations. We believe
      that, over time, it will become a capable, credible alternative
      to commercial software tools, such as NONMEM, Monolix, and
      Phoenix NLME.},
    address = {Hoboken},
    publisher = {John Wiley and Sons Inc.},
    url = {https://doi.org/10.1002/psp4.12445},
  }