@article{ref1,
title="A study of swimmer mouthpieces. 5-61",
journal="Report. United States. Navy Experimental Diving Unit, Washington, D. C",
year="1963",
author="Vail, J. R. and Lina weaver, P. G. Jr and Towle, H. G.",
volume="",
number="",
pages="12p-12p",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="",
doi="",
url="http://dx.doi.org/"
}