@article{Koops2021d,
author = "Judith C. Koops, Aart C. Liefbroer and Anne H. Gauthier",
title = "Socio-Economic Differences in the Prevalence of Single Motherhood in North America and Europe",
year = 2021,
journal = "European Journal of Population",
url = "https://link.springer.com/article/10.1007/s10680-021-09591-3"
}