@article{Rodgers2008,
author = {Rodgers, J.L. and Kohler, H.-P. and McGue, M. and Behrman, J.R. and Petersen, I. and Bingley, P. and Christensen, K.},
title= {Education and cognitive ability as direct, mediated, or spurious influences on female age at first birth: Behavioral genetic models fit to Danish twin data},
year = {2008},
doi = {10.1086/592205},
journal = {American Journal of Sociology},
volume = {114},
number = {S1},
pages = {S202--S232},
}