@article{ref1,
title="Acute pulmonary toxicity of manganese dioxide",
journal="Scandinavian journal of work, environment and health",
year="1977",
author="Bergström, R.",
volume="3",
number="Suppl 1",
pages="1-41",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0355-3140",
doi="",
url="http://dx.doi.org/"
}