Solopov, . I. ., V. . Avdienko, . T. . Fomichenko, and . I. . Bgantseva. “METHODOLOGICAL BASES OF DIFFERENTIATED CONTROL AND EVALUATION OF SPECIAL PHYSICAL AND FUNCTIONAL FITNESS OF SWIMMERS AT DIFFERENT STAGES OF LONG-TERM SPORTS TRAINING”. Theory and Practice of Physical Culture, no. 9, Nov. 2022, pp. 10-13, http://tpfk.ru/index.php/TPPC/article/view/380.