@article{ref1,
title="Performance testing for improving the level of respiratory protection in a fire brigade",
journal="Annals of occupational hygiene",
year="1978",
author="Balieu, E. and Spindler, L.",
volume="21",
number="4",
pages="351-361",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0003-4878",
doi="",
url="http://dx.doi.org/"
}