@article{Tuljapurkar2011,
author = {Tuljapurkar, S. and Edwards, R.},
title= {Variance in death and its implications for modeling and forecasting mortality},
year = {2011},
URL = {https://www.demographic-research.org/volumes/vol24/21/},
volume = {24},
number = {21},
pages = {497‒526},
}