@article{ref1,
title="Respiratory and cardiovascular effects of breath-holding",
journal="Acta physiologica Scandinavica, Supplementum",
year="1969",
author="Paulev, P. E.",
volume="324",
number="",
pages="1-116",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0302-2994",
doi="",
url="http://dx.doi.org/"
}