1. Beal SL, Sheiner LB, Boeckmann AJ, and Bauer RJ (eds) NONMEM 7.2.0 users guides. (1989–2011). Icon Development Solutions, Ellicott City. ftp://nonmem.iconplc.com/Public/nonmem720/guides
2. SAS User’s Guide, SAS Institute Inc. http://support.sas.com/documentation/cdl/en/statug/63033/HTML/default/viewer.htm#titlepage.htm
3. Jose Pinheiro, Douglas Bates (2000) Mixed-Effects Models in S and S-PLUS (Statistics and Computing) Springer; 1st ed. 2nd printing edition (April 15, 2009). http://www.springer.com/statistics/statistical+theory+and+methods/book/978-1-4419-0317-4
4. Jose Pinheiro, Douglas Bates, Saikat DebRoy, Deepayan Sarkar and the R Development Core Team (2011). nlme: Linear and nonlinear mixed effects models. http://cran.r-project.org/web/packages/nlme/index.html
5. WinNonMix ® , Pharsight, Cary, North Carolina