@article{ref1,
title="Factors affecting distance estimation in sporting activities",
journal="Human factors",
year="1974",
author="Price, D. M. and Rogers, J. G.",
volume="16",
number="5",
pages="508-513",
abstract="Abstract unavailable.",
language="",
issn="0018-7208",
doi="",
url="http://dx.doi.org/"
}