@article{ref1,
title="A study of the Bender Gestalt figures and visual perception",
journal="Acta psychologica",
year="1969",
author="Allen, R. M. and Adamo, C.",
volume="31",
number="4",
pages="394-396",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0001-6918",
doi="",
url="http://dx.doi.org/"
}