@article{ref1,
title="Queueing with balking. II",
journal="Biometrika",
year="1960",
author="Haight, Frank A.",
volume="47",
number="3-4",
pages="285-296",
abstract="<p>[Abstract unavailable]</p>",
language="en",
issn="0006-3444",
doi="10.1093/biomet/47.3-4.285",
url="http://dx.doi.org/10.1093/biomet/47.3-4.285"
}