@article{ref1,
title="Types of non-shatterable glass",
journal="Clinical and experimental optometry",
year="1934",
author="",
volume="17",
number="2",
pages="81-81",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0816-4622",
doi="10.1111/j.1444-0938.1934.tb05947.x",
url="http://dx.doi.org/10.1111/j.1444-0938.1934.tb05947.x"
}