@article{ref1,
title="Tympanometry in testing auditory tubal function",
journal="Audiology",
year="1972",
author="Holmquist, J.",
volume="11",
number="3",
pages="209-212",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0020-6091",
doi="",
url="http://dx.doi.org/"
}