@article{ref1,
title="Poisoning by ingestion of an excessive dose of levopropoxyphene (letusin)",
journal="Pediatria Prática",
year="1964",
author="Schvartsman, S.",
volume="35",
number="",
pages="51-52",
abstract="<p>[Abstract unavailable]</p><p>Language: pt</p>",
language="pt",
issn="0031-3947",
doi="",
url="http://dx.doi.org/"
}