@article{ref1,
title="An ego-psychological approach to the problem of oral aggression",
journal="International journal of psycho-analysis",
year="1972",
author="Clerk, G.",
volume="53",
number="1",
pages="77-82",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0020-7578",
doi="",
url="http://dx.doi.org/"
}