@article{Schoen2006,
author = {Schoen, R. and Canudas-Romo, V.},
title= {Multistate cohort models with proportional transfer rates},
year = {2006},
doi = {10.1353/dem.2006.0027},
journal = {Demography},
volume = {43},
number = {3},
pages = {553--568},
}