@article{ref1,
title="Peculiarities of spine fractures in patients over 60 years of age",
journal="Chirurgia Narzadow Ruchu i Ortopedia Polska",
year="1976",
author="Witwicki, T. and Dulowski, W. and Gorecki, A. and Czarnecki, A.",
volume="41",
number="3",
pages="239-244",
abstract="<p>[Abstract unavailable]</p><p>Language: pl</p>",
language="pl",
issn="0009-479X",
doi="",
url="http://dx.doi.org/"
}