Various R Programming Tools for Model Fitting
Gregory R. Warnes, Ben Bolker, Thomas Lumley, and Randall C
        Johnson. Contributions from Randall C. Johnson are Copyright
        (2005) SAIC-Frederick, Inc. Funded by the Intramural Research
        Program, of the NIH, National Cancer Institute, Center for
        Cancer Research under NCI Contract NO1-CO-12400.
Various R programming tools for model fitting.
gplots, gtools, Matrix, nlme, lme4 (>= 0.999999-0)