@article{Andersson2006,
author = {Andersson, G. and Hank, K. and Rønsen, M. and Vikat, A.},
title= {Gendering family composition: Sex preferences for children and childbearing behavior in the Nordic countries},
year = {2006},
doi = {10.1353/dem.2006.0010},
journal = {Demography},
volume = {43},
number = {2},
pages = {255--267},
}