@article{ref1,
title="Bioptic telescopic spectacles for driving a motor vehicle",
journal="Archives of ophthalmology (1960)",
year="1974",
author="Fonda, G.",
volume="92",
number="4",
pages="348-349",
abstract="Abstract unavailable.",
language="",
issn="0003-9950",
doi="",
url="http://dx.doi.org/"
}