@article{ref1,
title="Effects of dextroamphetamine and contingency management on a preschooler with ADHD and oppositional defiant disorder",
journal="Journal of the American Academy of Child and Adolescent Psychiatry",
year="1988",
author="Speltz, M. L. and Varley, C. K. and Peterson, K. and Beilke, R. L.",
volume="27",
number="2",
pages="175-178",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0890-8567",
doi="10.1097/00004583-198803000-00007",
url="http://dx.doi.org/10.1097/00004583-198803000-00007"
}