@article{ref1,
title="Eeg findings in patients with postconcussion syndrome",
journal="Psychiatria, neurologia, neurochirurgia",
year="1963",
author="Hiddema, F.",
volume="66",
number="",
pages="517-521",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0033-2666",
doi="",
url="http://dx.doi.org/"
}