@article{ref1,
title="Determination of blood carbon monoxide in gas generator workers",
journal="Glasnik, Belgrad, Higijenski Institut NR Srbije",
year="1957",
author="Petrovic, L. and Belasevic, K. and Ignjatovic, B.",
volume="6",
number="1-2",
pages="59-70",
abstract="<p>[Abstract unavailable]</p> <p>Language: un</p>",
language="un",
issn="0354-1169",
doi="",
url="http://dx.doi.org/"
}