Christopher H. Brooks Robert S. Gazzale Jeffrey K. MacKie-Mason Edmund H. Durfee Improving Learning Performance by Applying Economic Knowledge. 124-144 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3048&spage=124 2003 conf/amec/2003 AMEC db/conf/amec/amec2003.html#BrooksGMD03