TY - JOUR AU - admin, PY - 2022/03/31 Y2 - 2024/03/29 TI - Cover, Volume 57, Number 1 JF - Matematychni Studii JA - Mat. Stud. VL - 57 IS - 1 SE - Cover and Table of Contents DO - UR - http://matstud.org.ua/ojs/index.php/matstud/article/view/314 SP - AB - ER -