@article{ref1,
title="Unstable relationship of child with squint to his environment and its significance as an immature asymmetry of visual perception",
journal="Klinische Monatsblätter für Augenheilkunde und für augenärztliche Fortbildung",
year="1957",
author="Piper, H. F.",
volume="131",
number="4",
pages="513-522",
abstract="<p>[Abstract unavailable]</p> <p>Language: de</p>",
language="de",
issn="0344-6360",
doi="",
url="http://dx.doi.org/"
}