@article{ref1,
title="A suggested experiment on the clock paradox",
journal="Nature",
year="1957",
author="Cochran, W.",
volume="179",
number="4567",
pages="977-978",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0028-0836",
doi="",
url="http://dx.doi.org/"
}