Angelina A. Tzacheva and  Jaishree Ranganathan,  Pattern Discovery from Student Feedback: Identifying Factors to Improve Student Emotions in Learning.   journal   = {International Journal of Educational and Pedagogical Sciences}, [online]. World Academy of Science, Engineering and Technology.
    November 2020, vol. 168(12). 1260 - 1265
    [viewed 11 May 2024]. Available from: https://publications.waset.org/pdf/10011679.