@article{ref1,
title="The journey to work in the United States: 1979",
journal="Current population reports, Series P-20, Population characteristics",
year="1982",
author="Salopek, P. A.",
volume="",
number="122",
pages="1-36",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0363-6836",
doi="",
url="http://dx.doi.org/"
}