UMURKULOVA D, USMONOV A. MENTAL TOUGHNESS OF YOUNG TENNIS PLAYERS. METHODICAL METHODS OF ACHIEVING MENTAL STABILITY. NUUz [Internet]. 2024Oct.30 [cited 2024Dec.5];1(1.5.1):224-6. Available from: https://journalsnuu.uz/index.php/1/article/view/4850