@article{Mills2010,
author = {Mills, M. and Begall, K.},
title= {Preferences for the sex composition of children in Europe: A multilevel examination of its effect on progression to a third child},
year = {2010},
doi = {10.1080/00324720903497081},
journal = {Population Studies},
volume = {64},
number = {1},
pages = {77--95},
}