@article{ref1,
title="Standardization of units of measurement in civil aviation",
journal="Nature",
year="1950",
author="Branch, W. J. V.",
volume="165",
number="4208",
pages="1008-1008",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0028-0836",
doi="",
url="http://dx.doi.org/"
}