Lamminen, J., M. Leppänen, R. Heikkinen, A. Kämäräinen, and E. Jokisuu. “A Quantitative Method for Localizing User Interface Problems: The D-TEO Method”. Human Technology, vol. 5, no. 2, July 2021, pp. 121–145, https://ht.csr-pub.eu/index.php/ht/article/view/91.