@article{ref1,
title="Beware of snowy roofs!",
journal="American journal of public health",
year="1988",
author="Kullenberg, K. and Bjornstig, Ulf and Eriksson, Antonina",
volume="78",
number="3",
pages="322-322",
abstract="<font size=&quot;2&quot;>Abstract unavailable.</font>",
language="",
issn="0090-0036",
doi="",
url="http://dx.doi.org/"
}