@article{ref1,
title="Oxygen requirements in underwater swimming",
journal="Journal of applied physiology (APS DC)",
year="1956",
author="Frassetto, R. and GOFF, L. G. and Specht, H.",
volume="9",
number="2",
pages="219-221",
abstract="Abstract unavailable.",
language="",
issn="0021-8987",
doi="",
url="http://dx.doi.org/"
}