Zhenchenko, M., O. Melnyk, Y. Prykhoda, and I. Zhenchenko. “Ukrainian E-Learning Platforms for Schools: Evaluation of Their Functionality”. The International Review of Research in Open and Distributed Learning, Vol. 23, no. 2, May 2022, pp. 136-50, doi:10.19173/irrodl.v23i2.5769.