RyabovaN.V., ShevchenkoO.Y., BiloivanenkoM.V., GoloviankoM.V., VoloshynaN.O., and ShubkinaO.V. 2009. “Development Of The Common Hardware And Software Architecture For The Distributed Version Of The Ontology-Based Portal”. Journal of Information Technologies in Education (ITE), no. 4 (December), 164-78. https://doi.org/10.14308/ite000103.