@article{Wrigley-Field2021,
author = {Wrigley-Field, E. and Feehan, D.},
title= {In a stationary population, the average lifespan of the living is a length-biased life expectancy},
year = {2021},
doi = {10.1215/00703370-9639692},
volume = {59},
number = {1},
pages = {207--220},
}