WASET
    Mohammad H. Taheri and  David J. Brown and  Nasser Sherkat,  Modeling Engagement with Multimodal Multisensor Data: The Continuous Performance Test as an Objective Tool to Track Flow.   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    May 2020, vol. 162(6). 197 - 208
    [viewed 19 April 2024]. Available from: https://publications.waset.org/pdf/10011258.