TY - JOUR AU - Sergei N. Pozdnyakov PY - 2020/06/27 Y2 - 2024/03/28 TI - DATA OF ISSUE JF - Computer Tools in Education JA - CTE VL - IS - 2 SE - Data of Issue DO - UR - http://cte.eltech.ru/ojs/index.php/kio/article/view/1668 AB - - ER -