@article{ref1,
title="On plant defensive agents. IV. Structure of the primrose poison",
journal="Zeitschrift für Naturforschung. Teil B: Chemie, Biochemie, Biophysik, Biologie",
year="1967",
author="Schildknecht, H. and Bayer, I. and Schmidt, H.",
volume="22",
number="1",
pages="36-41",
abstract="<p>[Abstract unavailable]</p><p>Language: de</p>",
language="de",
issn="0044-3174",
doi="",
url="http://dx.doi.org/"
}