@article{ref1,
title="Depression in chronic metallic mercury poisoning",
journal="Wiadomosci Lekarskie",
year="1977",
author="Knap, J. and Piotrowski, Z.",
volume="30",
number="7",
pages="561-563",
abstract="<p>[Abstract unavailable]</p><p>Language: pl</p>",
language="pl",
issn="0043-5147",
doi="",
url="http://dx.doi.org/"
}