@article{ref1,
title="Early spatial perception taken in reference to manual action",
journal="Acta psychologica",
year="1986",
author="von Hofsten, Claes",
volume="63",
number="1-3",
pages="323-335",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0001-6918",
doi="",
url="http://dx.doi.org/"
}