BibTex format
@article{Joffe:2009:humrep/dep087,
author = {Joffe, M and Key, J and Best, N and Jensen, TK and Keiding, N},
doi = {humrep/dep087},
journal = {HUMAN REPRODUCTION},
pages = {1999--2006},
title = {The role of biological fertility in predicting family size},
url = {http://dx.doi.org/10.1093/humrep/dep087},
volume = {24},
year = {2009}
}