@article{ref1,
title="An examination of alternative emergency ambulance systems: contributions from an economic geography perspective",
journal="Social science and medicine, medical geography",
year="1979",
author="Achabal, D. D. and Schoeman, M. E.",
volume="13 D",
number="2",
pages="81-86",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0160-8002",
doi="",
url="http://dx.doi.org/"
}