Citing earth

The following BibTex entry seems to do the trick. The "and"s in the author entry get converted to commas by latex.

@Manual{earthpackage,
  title = {Earth: Multivariate Adaptive Regression Spline Models},
  author = {S. Milborrow and derived from code by T. Hastie and R. Tibshirani},
  year = {2007},
  note={R package available at \url{http://cran.r-project.org/src/contrib/Descriptions/earth.html}}
}

From within R you can use (but you will have to massage the results):

> library(earth)
> citation("earth")

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