@article{ref1,
title="Average of mortality, a demographic indicator of life style",
journal="Revista ecuatoriana de higiene y medicina tropical",
year="1976",
author="Enderica V, R.",
volume="29",
number="",
pages="25-29",
abstract="<p>[Abstract unavailable]</p><p>Language: es</p>",
language="es",
issn="0013-0745",
doi="",
url="http://dx.doi.org/"
}