@article{ref1,
title="Changes of the duration of apnea in underwater swimming",
journal="Bollettino della Società Italiana di Biologia Sperimentale",
year="1967",
author="Calderaro, S. and Brizzi, G.",
volume="43",
number="23",
pages="1767-1770",
abstract="<p>[Abstract unavailable]  Keywords: Drowning; Drowning Prevention; Water Safety </p> <p>Language: it</p>",
language="it",
issn="0037-8771",
doi="",
url="http://dx.doi.org/"
}