@article{Hyndman2013,
author = {Hyndman, Rob J and Booth, Heather and Yasmeen, Farah},
title= {Coherent mortality forecasting: The product-ratio method with functional time series models.},
year = {2013},
URL = {10.1007/s13524-012-0145-5},
journal = {Demography},
volume = {50},
number = {1},
pages = {261--283},
}