Blinova, T.L. and Naymushina, K.Y. 2020. Methodical System of Studying to the Course of Mathematics Trainings Methodics in the Digital Epoch. Russian Digital Libraries Journal. 23, 1-2 (Mar. 2020), 14-24. DOI:https://doi.org/10.26907/1562-5419-2020-23-1-2-14-24.