@article{ref1,
title="Criteria for the building of courses for jumping trials and cross-country riding in tournament sports",
journal="Deutsche Tierarztliche Wochenschrift DTW",
year="1992",
author="Plewa, M.",
volume="99",
number="1",
pages="31-36",
abstract="<p>[Abstract unavailable]</p> <p>Language: de</p>",
language="de",
issn="0341-6593",
doi="",
url="http://dx.doi.org/"
}