@article{ref1,
title="Traumatic rupture of the placenta",
journal="Zentralblatt für Gynäkologie",
year="1972",
author="Schuhmann, R. and Geier, G.",
volume="94",
number="38",
pages="1239-1243",
abstract="<p>[Abstract unavailable]</p><p>Language: de</p>",
language="de",
issn="0044-4197",
doi="",
url="http://dx.doi.org/"
}