@article{ref1,
title="The concept of weight in aviation",
journal="Journal of aviation medicine",
year="1952",
author="Haber, H.",
volume="23",
number="6",
pages="594-596",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0095-991X",
doi="",
url="http://dx.doi.org/"
}