@article{ref1,
title="A Problem in the Combination of Accident Frequencies",
journal="Biometrika",
year="1958",
author="Tanner, JC",
volume="45",
number="3-4",
pages="331-342",
abstract="[Abstract unavailable]  <p>Language: en</p>",
language="en",
issn="0006-3444",
doi="",
url="http://dx.doi.org/"
}