@article{ref1,
title="Letter: What shall replace lead in gasoline?",
journal="New England journal of medicine",
year="1973",
author="Levisohn, S. R.",
volume="289",
number="20",
pages="1095-1095",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0028-4793",
doi="",
url="http://dx.doi.org/"
}