R. Moskalenko, Maxim, Evgenij M. Dorozhkin, Olga A. Tolstykh, Uliana E. Marakulina, and Maria V. Mustakimova. “Electronic Learning Resources and Online Education Technology: Issues of Effectiveness Evaluation”. International Journal of Engineering and Technology 7, no. 2.13 (April 15, 2018): 189–193. Accessed May 22, 2025. https://mail.sciencepubco.com/index.php/IJET/article/view/11685.