@article{ref1,
title="A Method for Predicting the Number of Near Mid-Air Collisions in a Defined Airspace",
journal="Operational research quarterly",
year="1971",
author="May, Gus",
volume="22",
number="3",
pages="237-251",
abstract="A method is proposed for calculating the number of Near Mid-Air Collisions to be expected in a volume of airspace about which the traffic patterns are known. Whilst not providing absolute predictions, because of the difficulty of modelling the human elements in such a system, the technique does enable those areas of particular air traffic control complexity to be highlighted.<p />",
language="",
issn="0030-3623",
doi="",
url="http://dx.doi.org/"
}