@article{ref1,
title="Method for determination of visual acuity",
journal="Vestnik Oftalmologii",
year="2008",
author="Tlupova, T. G.",
volume="124",
number="4",
pages="51-53",
abstract="<p>[Abstract unavailable]</p> <p>Language: ru</p>",
language="ru",
issn="0042-465X",
doi="",
url="http://dx.doi.org/"
}