@article{ref1,
title="Nonbreakable eyeglasses",
journal="Klinische Monatsblätter für Augenheilkunde (1963)",
year="1972",
author="Schober, H. and Sommer, K.",
volume="161",
number="2",
pages="165-174",
abstract="<p>[Abstract unavailable]</p><p>Language: de</p>",
language="de",
issn="0023-2165",
doi="",
url="http://dx.doi.org/"
}