@article{ref1,
title="Control of mammals and birds in airports",
journal="Deutsche Tierarztliche Wochenschrift DTW",
year="1986",
author="Keil, W.",
volume="93",
number="5",
pages="203-204",
abstract="<p>[Abstract unavailable]</p><p>Language: de</p>",
language="de",
issn="0341-6593",
doi="",
url="http://dx.doi.org/"
}