@article{Holford1983,
author = {Holford, T.R.},
title= {The estimation of age, period and cohort effects for vital rates},
year = {1983},
doi = {10.2307/2531004},
URL = {https://doi.org/doi:10.2307/2531004},
volume = {39},
number = {2},
pages = {311--324},
}