@article{Fried1980,
author = {Fried, E.S. and Hofferth, S.L. and Udry, J.R.},
title= {Parity-specific and two-sex utility models of reproductive intentions},
year = {1980},
doi = {10.2307/2060959},
journal = {Demography},
volume = {17},
number = {1},
pages = {1--11},
}