@article{ref1,
title="The birth and death rates for England and wales in 1903",
journal="Public health",
year="1904",
author="May, H",
volume="16",
number="",
pages="548-557",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0033-3506",
doi="",
url="http://dx.doi.org/"
}