@article{ref1,
title="Medical and human-factor aspects of the first fatal helicopter accident in Sri Lanka",
journal="Ceylon medical journal",
year="1987",
author="Wickremesinghe, N. F.",
volume="32",
number="2",
pages="75-87",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0009-0875",
doi="",
url="http://dx.doi.org/"
}