Savchuk, Borys, Ruslana Romanyshyn, Liliana Khimchuk, and Lesia Vysochan. 2021. “FORMATION COGNITIVE FLEXIBILITY AS A BASIC COMPETENCE OF A FUTURE TEACHER: SCIENTIFIC AND THEORETICAL SUBSTANTIATION THIS PROBLEM: Array”. Mountain School of Ukrainian Carpaty, no. 25 (October):102-6. https://journals.pnu.edu.ua/index.php/msuc/article/view/5811.