@article{ref1,
title="The symptomatology of childhood: a preliminary attempt at classification",
journal="Psychoanalytic study of the child, The",
year="1970",
author="Freud, A.",
volume="25",
number="",
pages="19-41",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0079-7308",
doi="",
url="http://dx.doi.org/"
}