TY - JOUR AU - admin, PY - 2020/06/27 Y2 - 2024/03/28 TI - Cover, Volume 53, Number 2 JF - Matematychni Studii JA - Mat. Stud. VL - 53 IS - 2 SE - Cover and Table of Contents DO - UR - http://matstud.org.ua/ojs/index.php/matstud/article/view/95 SP - AB - ER -