@article{ref1,
title="A major threat to children's mental health. Psychological maltreatment",
journal="American psychologist, The",
year="1987",
author="Hart, Stuart N. and Brassard, M. R.",
volume="42",
number="2",
pages="160-165",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0003-066X",
doi="",
url="http://dx.doi.org/"
}