@article{ref1,
title="Good and poor sleepers differ in Navy performance",
journal="Military medicine",
year="1983",
author="Johnson, L. Clark and Spinweber, C. L.",
volume="148",
number="9",
pages="727-731",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0026-4075",
doi="",
url="http://dx.doi.org/"
}