@article{Wilson1988,
author = {Wilson, C. and Oeppen, J. and Pardoe, MCFpdS},
title= {What is natural fertility? The modelling of a concept},
year = {1988},
doi = {10.2307/3644106},
URL = {https://doi.org/doi:10.2307/3644106},
volume = {54},
number = {1},
pages = {4‒20},
}