@article{ref1,
title="Traumatic injuries of skull and brain",
journal="Polski przeglad chirurgiczny",
year="1966",
author="Pietrzyk, I. and Szczygiel, K. and Chrzaszczewska, I.",
volume="38",
number="6",
pages="542-547",
abstract="<p>[Abstract unavailable]</p><p>Language: pl</p>",
language="pl",
issn="0032-373X",
doi="",
url="http://dx.doi.org/"
}