xasanov, anvar. 2022. «DEVELOPMENT OF CHILDREN AND TEENAGERS SPORTS SCHOOLS VOLLEYBALL PLAYERS JUMPING AND JUMPING ENDURANCE: DEVELOPMENT OF CHILDREN AND TEENAGERS SPORTS SCHOOLS VOLLEYBALL PLAYERS JUMPING AND JUMPING ENDURANCE». Физическое воспитание, спорт и здоровье 2 (2). https://art.jdpu.uz/index.php/pshedu/article/view/6211.