@article{ref1,
title="Problem of poisoning in rural areas",
journal="Medicamenta",
year="1951",
author="Lorenzo velazquez, B.",
volume="9",
number="199",
pages="307-313",
abstract="<p>[Abstract unavailable]</p> <p>Language: un</p>",
language="un",
issn="0025-7648",
doi="",
url="http://dx.doi.org/"
}