@article{ref1,
title="Birth order and preference for dangerous sports among males",
journal="Research quarterly",
year="1976",
author="Yiannakis, A.",
volume="47",
number="1",
pages="62-67",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0034-5377",
doi="",
url="http://dx.doi.org/"
}