@article{Gietel-Basten2019,
author = {Gietel-Basten, S. and Scherbov, S.},
title= {Is half the world’s population really below ‘replacement-rate’?},
year = {2019},
doi = {10.1371/journal.pone.0224985},
volume = {14},
number = {12},
pages = {e0224985},
}