@article{ref1,
title="Night blindness and accidents at sea",
journal="Munchener Medizinische Wochenschrift",
year="1956",
author="Wietfeldt, H.",
volume="98",
number="22",
pages="790-792",
abstract="<p>[Abstract unavailable]</p><p>Language: de</p>",
language="de",
issn="0027-2973",
doi="",
url="http://dx.doi.org/"
}