Dewit, Ivo, et al. “How Can Comparative Judgement Become an Effective Means Toward Providing Clear Formative Feedback to Students to Improve Their Learning Process During Their Product-Service-System Design Project?”. Design and Technology Education: An International Journal, vol. 26, no. 3-2, Nov. 2021, pp. 276-93, https://doi.org/10.24377/DTEIJ.article1340.