@article{Freedman1980,
author = {Freedman, R. and Freedman, D. and Thornton, A.D.},
title= {Changes in fertility expectations and preferences between 1962 and 1977: Their relation to final parity},
year = {1980},
doi = {10.2307/2061151},
volume = {17},
number = {4},
pages = {365--378},
}