@article{ref1,
title="Will an helicopter ambulance be profitable? A theoretical socioeconomic study",
journal="Lakartidningen",
year="1980",
author="Dalne, O. and Neldin, A. and Norgren, C. and Sjöstrand, U.",
volume="77",
number="17",
pages="1601-1606",
abstract="<p>[Abstract unavailable]</p><p>Language: sv</p>",
language="sv",
issn="0023-7205",
doi="",
url="http://dx.doi.org/"
}