treeclim is an R-package for numerical calibration of proxy-climate relationships.
treeclim‘s predecessor is bootRes, which is now in feature freeze state. If you still use bootRes, consider switching to treeclim, it’s faster, and much more flexible!
Please cite treeclim properly when you use it in your publications:
Zang CS + Biondi F (2015) treeclim: an R package for the numerical calibration of proxy-climate relationships. Ecography 38:431-436, doi:10.1111/ecog.01335.