Shearman, Donald, Shatha Aziz, and Jim Pettigrew. “Development and Analysis of a Numbas Diagnostic Tool for Use in a Mathematics Refresher Program”. MSOR Connections 22, no. 3 (April 25, 2024): 29–38. Accessed November 13, 2025. https://journals.gre.ac.uk/index.php/msor/article/view/1479.