Facilitating code-writing in PI classes. - Daniel Zingaro; Yuliya Cherenkova; Olessia Karpova; Andrew Petersen 001 (SIGCSE, 2013)

RAPT: Relational Algebra Parsing Tools. - Olessia Karpova; Noel D'Souza; Diane Horton; Andrew Petersen 001 (ITiCSE, 2015)