@article{Smallwood2002,
author = {Smallwood, S.},
title= {The effect of changes in the timing of childbearing on measuring fertility in England and Wales},
year = {2002},
URL = {www.statistics.gov.uk/STATBASE/Product.asp?vlnk=6303},
journal = {Population Trends},
volume = {109},
pages = {36--45},
}