@article{ref1,
title="Use of cards with peripheral perforations in recording and analysis of injuries",
journal="Ortopediia travmatologiia i protezirovanie",
year="1969",
author="Nudel'man, V. S.",
volume="30",
number="12",
pages="49-52",
abstract="<p>[Abstract unavailable]</p><p>Language: ru</p>",
language="ru",
issn="0030-5987",
doi="",
url="http://dx.doi.org/"
}