@article{Van der Gaag2015,
author = {Van der Gaag, N. and Bijwaard, G. and Beer, J. and Bonneux, L.},
title= {A multistate model to project elderly disability in case of limited data},
year = {2015},
doi = {10.4054/DemRes.2015.32.3},
volume = {32},
number = {32},
pages = {75--106},
}