@article{Bollen2007,
author = {Bollen, K.A. and Glanville, J.L. and Stecklov, G.},
title= {Socio-economic status, permanent income, and fertility: a latent-variable approach.},
year = {2007},
doi = {10.1080/00324720601103866},
journal = {Population studies},
volume = {61},
number = {1},
pages = {15--34},
}