Keržič, D., A. Aristovnik, N. Tomaževič, and L. Umek. “Evaluating the Impact of E-Learning on Students` Perception of Acquired Competencies in a University Blended Learning Environment”. Journal of E-Learning and Knowledge Society, Vol. 14, no. 3, Jan. 2019, doi:10.20368/1971-8829/1440.