@article{ref1,
title="Some applications of the theory of ordinary differential equations to population growth problems",
journal="Anais da Academia Brasileira de Ciências",
year="1976",
author="Brauer, F.",
volume="48",
number="3",
pages="369-385",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0001-3765",
doi="",
url="http://dx.doi.org/"
}