@article{ref1,
title="Melting, casting and shaping lead shielding blocks: method and toxicity aspects",
journal="American journal of roentgenology, radium therapy, and nuclear medicine",
year="1972",
author="Karzmark, C. J. and Huisman, P. A.",
volume="114",
number="3",
pages="636-638",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0002-9580",
doi="",
url="http://dx.doi.org/"
}