Tikhonov, Urij, Valeriy Lakhno, Elena Skliarenko, Olga Stepanenko, and Kostiantyn Dvirnyi. 2016. “Development of Ontological Approach in E-Learning When Studying Information Technologies”. Eastern-European Journal of Enterprise Technologies 5 (2 (83):13-20. https://doi.org/10.15587/1729-4061.2016.79230.