@article{ref1,
title="Tests on CS for carcinogenicity",
journal="British medical journal: BMJ",
year="1973",
author="",
volume="1",
number="5846",
pages="129-129",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0959-8138",
doi="",
url="http://dx.doi.org/"
}