@article{Richards2006,
author = {Richards, S.J. and Kirkby, J.G. and Currie, I.D.},
title= {The importance of year of birth in two-dimensional mortality data},
year = {2006},
doi = {10.1017/S1357321700004682},
URL = {https://doi.org/doi:10.1017/S1357321700004682},
volume = {12},
number = {1},
pages = {5--61},
}