@article{ref1,
title="Possibility of injurious effects of plastic materials",
journal="Polski Tygodnik Lekarski",
year="1966",
author="Markiewicz, K.",
volume="21",
number="30",
pages="1167-1170",
abstract="<p>[Abstract unavailable]</p><p>Language: pl</p>",
language="pl",
issn="0032-3756",
doi="",
url="http://dx.doi.org/"
}