@article{ref1,
title="Phototoxic properties of various coal derivatives",
journal="Przegla̧d Dermatologiczny",
year="1981",
author="Lukasiak-Bachurzewska, B. and Dulczewska-Kłopotowska, M.",
volume="68",
number="1",
pages="33-37",
abstract="<p>[Abstract unavailable]</p><p>Language: pl</p>",
language="pl",
issn="0033-2526",
doi="",
url="http://dx.doi.org/"
}