@article{Meira-Machado2011,
author = {Meira-Machado, L.M. and Roca-Pardinas, J.},
title= {p3state.sms: analyzing survival data from an illness-death model},
year = {2011},
journal = {Journal of Statistical Software},
volume = {38},
number = {3},
pages = {1--18},
}