@techreport{Esteve2021,
author = {Esteve, A. and Lozano, M. and Boertien, D. and Mogi, R. and Cui, Q.},
title= {Three decades of lowest-low fertility in Spain, 1991–2018},
year = {2021},
doi = {10.31235/osf.io/45j23},
publisher = {SocArXiv},
}