@article{Leasure1982,
author = {Leasure, J.W. },
title= {La baisse de la fécondité aux État-Unis de 1800 à 1860},
year = {1982},
doi = {10.2307/1532174},
journal = {Population},
volume = {37},
number = {3},
pages = {607--622},
}