@article{ref1,
title="Obstruction of vehicle-drivers' vision by spectacle frames",
journal="British medical journal: BMJ",
year="1966",
author="Smith, H. P. R. and Weale, R. A.",
volume="2",
number="5511",
pages="445-447",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0959-8138",
doi="",
url="http://dx.doi.org/"
}