Vlasenko, Kateryna V., Sergii V. Volkov, Iryna V. Lovianova, Irina V. Sitak, Olena O. Chumak, and Nataliia H. Bohdanova. “Exploring Usability Principles for Educational Online Courses: A Case Study on an Open Platform for Online Education”. Educational Technology Quarterly 2023, no. 2 (June 21, 2023): 173–187. Accessed November 5, 2025. https://acnsci.org/journal/index.php/etq/article/view/602.