@article{ref1,
title="Lethal and minimal (borderline) concentrations of freons",
journal="Trudy Leningradskogo Sanitarno-Gigienicheskogo Meditsinskogo Instituta",
year="1963",
author="Karpov, B. D.",
volume="75",
number="",
pages="241-249",
abstract="<p>[Abstract unavailable]</p><p>Language: ru</p>",
language="ru",
issn="0371-9367",
doi="",
url="http://dx.doi.org/"
}