@article{ref1,
title="Undertow and rip tides",
journal="Science",
year="1931",
author="Davis, W. M.",
volume="73",
number="1898",
pages="526-527",
abstract="Early discussion of rip currents in Science journal.<p />",
language="en",
issn="0036-8075",
doi="10.2307/1655539",
url="http://dx.doi.org/10.2307/1655539"
}