@article{ref1,
title="Vehicle industry: Public versus individual transportation",
journal="International journal of vehicle design",
year="1990",
author="Michelberger, P",
volume="11",
number="4-5",
pages="343-346",
abstract="<p>[Abstract unavailable]</p>",
language="en",
issn="0143-3369",
doi="",
url="http://dx.doi.org/"
}