@misc{W2950371985,
  author = {Douglas M. Bates and Martin Mächler and Benjamin M. Bolker and Steve Walker},
  title = {Fitting Linear Mixed-Effects Models Using lme4},
  year = {2014},
  howpublished = {arXiv (Cornell University)},
  doi = {https://doi.org/10.3929/ethz-b-000105397}
}