@article{ref1,
title="Duties to Trespassers: A Comparative Survey and Revaluation",
journal="Yale law journal",
year="1959",
author="Hughes, Graham",
volume="68",
number="4",
pages="633-704",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0044-0094",
doi="10.2307/794397",
url="http://dx.doi.org/10.2307/794397"
}