(This article was first published on One R Tip A Day, and kindly contributed to R-bloggers)
The new R 2.10.0 is out! Get it from here.If you like take a look at these posts for some miscellaneous advices to make the upgrade easier.
Fell free to contribute with suggestions about how to upgrade your R installation.
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Zero Inflated Models and Generalized Linear Mixed Models with R.
Zuur, Saveliev, Ieno (2012).