@Article{Carroll:2003,
  author="Kevin J. Carroll",
  title="On the use and utility of the Weibull model in the analysis of survival data",
  year="2003",
  journal="Controlled Clinical Trials",
  volume="24",
  number="6",
  pages="682--701",
  url = "http://www.ncbi.nlm.nih.gov/pubmed/14662274"
}

@article{Putter:2007,
  title={Tutorial in biostatistics: competing risks and multi-state models},
  author={Putter, H and Fiocco, M and Geskus, RB and others},
  journal={Statistics in medicine},
  volume={26},
  number={11},
  pages={2389},
  year={2007},
  publisher={John Wiley \& Sons, Ltd}
}