To cite package 'tweedie' in publications use:
Peter K Dunn (2014). tweedie: Tweedie exponential family models. R package version 2.2.1.
Corresponding BibTeX entry:
@Manual{, title = {tweedie: Tweedie exponential family models}, author = {Peter K Dunn}, year = {2014}, note = {R package version 2.2.1}, }