@article{ref1,
title="Withdrawal symptoms in workers exposed to nitroglycerine",
journal="British journal of industrial medicine",
year="1968",
author="Lund, RP and Häggendal, J and Johnsson, G",
volume="25",
number="2",
pages="136-138",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0007-1072",
doi="",
url="http://dx.doi.org/"
}