Do students SQLify? improving learning outcomes with peer review and enhanced computer assisted assessment of querying skills. - Michael de Raadt; Stijn Dekeyser; Tien Yu Lee (Koli Calling, 2006)

Computer Assisted Assessment of SQL Query Skills. - Stijn Dekeyser; Michael de Raadt; Tien Yu Lee (ADC, 2007)

A System Employing Peer Review and Enhanced Computer Assisted Assessment of Querying Skills. - Michael de Raadt; Stijn Dekeyser; Tien Yu Lee (Informatics Educ., 2007)