Today a new version of RStudio (v0.96) is available for download from our website. The main focus of this release is improved tools for authoring, reproducible research, and web publishing. This means lots of new Sweave features as well as tight integration with the knitr package (including support for creating dynamic web reports with the 







Zero Inflated Models and Generalized Linear Mixed Models with R.
Zuur, Saveliev, Ieno (2012).