@article{Buettner2021,
author = {Buettner, T.},
title= {World population prospects – a long view},
year = {2021},
doi = {10.24187/ecostat.2020.520d.2030},
URL = {http://dx.doi.org/10.24187/ecostat.2020.520d.2030},
number = {520–521},
pages = {9--27},
}