@inbook{Schoen2025,
author = {Schoen, R.},
title= {Exponential age-change in fertility, proportional age-change, and stability},
year = {2025},
doi = {10.1007/978-3-031-89737-5},
editor = {Schoen, R.},
booktitle = {Advances in social demography},
address = {Cham},
publisher = {Springer},
pages = {407--431},
}