@article{ref1,
title="Effect of time zone and game time changes on team performance: National Football League",
journal="Medicine and science in sports and exercise",
year="1993",
author="O'Connor, P. J.",
volume="25",
number="11",
pages="1298-1299",
abstract="<p>[Abstract unavailable]  Keywords: American football; </p> <p>Language: en</p>",
language="en",
issn="0195-9131",
doi="",
url="http://dx.doi.org/"
}