Salem, Abdel Badeeh Mohamed M., and Silvia Parusheva. “Exploiting the Knowledge Engineering Paradigms for Designing Smart Learning Systems”. Eastern-European Journal of Enterprise Technologies 2, no. 2 (92) (April 11, 2018): 38–44. Accessed July 18, 2024. https://journals.uran.ua/eejet/article/view/128410.