@article{ref1,
title="Taking the mass out of transit",
journal="Environmental science and technology",
year="2005",
author="Petkewich, Rachel",
volume="39",
number="3",
pages="61A-62A",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0013-936X",
doi="",
url="http://dx.doi.org/"
}