@article{ref1,
title="In the dark: rectal tears--an occupational hazard",
journal="Equine veterinary journal",
year="1989",
author="Butterfield, R. M.",
volume="21",
number="3",
pages="164-165",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0425-1644",
doi="",
url="http://dx.doi.org/"
}