Pinheiro J, Bates D, R Core Team (2025).nlme: Linear and Nonlinear Mixed Effects Models.doi:10.32614/CRAN.package.nlme, R package version 3.1-168,https://CRAN.R-project.org/package=nlme.
Pinheiro JC, Bates DM (2000).Mixed-Effects Models in S and S-PLUS.Springer, New York.doi:10.1007/b98882.
Corresponding BibTeX entries:
@Manual{, title = {nlme: Linear and Nonlinear Mixed Effects Models}, author = {José Pinheiro and Douglas Bates and {R Core Team}}, year = {2025}, note = {R package version 3.1-168}, url = {https://CRAN.R-project.org/package=nlme}, doi = {10.32614/CRAN.package.nlme}, } @Book{, title = {Mixed-Effects Models in S and S-PLUS}, author = {José C. Pinheiro and Douglas M. Bates}, year = {2000}, publisher = {Springer}, address = {New York}, doi = {10.1007/b98882}, }