@article{ref1,
title="Simultaneous attack by adult males of a polyspecific troop of monkeys against a crowned hawk eagle",
journal="Folia Primatologica",
year="1988",
author="Gautier-Hion, A. and Tutin, C. E.",
volume="51",
number="2-3",
pages="149-151",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0015-5713",
doi="",
url="http://dx.doi.org/"
}