@article{ref1,
title="Determination of lethality (LD50) of common trace elements",
journal="Journal of the Egyptian Public Health Association",
year="1988",
author="Abou-Shady, E. A. and Ayobe, M. H. and el-Damarawy, N. A.",
volume="63",
number="5-6",
pages="407-408",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0013-2446",
doi="",
url="http://dx.doi.org/"
}