Velmurugan, G., D. . Stentoft, and J. G. Davidsen. “Disagreeing About the Problem in PBL: How Students Negotiate Disagreements Regarding the Problem in PBL”. Journal of Problem Based Learning in Higher Education, vol. 9, no. 1, Dec. 2021, doi:10.5278/ojs.jpblhe.v9i1.6241.