@article{ref1,
title="Development of "navigation system" for high-speed train",
journal="Japanese railway engineering",
year="1992",
author="Watanabe, Kazuyoshi",
volume="",
number="",
pages="-",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0448-8938",
doi="",
url="http://dx.doi.org/"
}