@article{Alho2008,
author = {Alho, J.},
title= {Aggregation across countries in stochastic population forecasts},
year = {2008},
doi = {10.1016/j.ijforecast.2008.05.003},
journal = {International Journal of Forecasting},
volume = {24},
number = {3},
pages = {343--353},
}