@article{ref1,
title="Use of the helicopter as an emergency vehicle in the civilian environment: results of a survey-questionnaire",
journal="Aerospace medicine",
year="1970",
author="Turner, H. S. and Ellingson, H. V.",
volume="41",
number="2",
pages="135-138",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0001-9402",
doi="",
url="http://dx.doi.org/"
}