00842naa#a2200205#i#450# EN\\bibl\127770 20260723091219.4 1994-4683 20231230b2023####ek#y0engy0150####ca RU DEVELOPMENT OF CONCENTRATION OF ATTENTION BY MEANS OF NEURODYNAMIC GYMNASTICS IN YOUNG CHESS PLAYERS 7-9 YEARS OLD Journal article Moscow National State University of Physical Education, Sports and Health named after P.F. Lesgaft 2023 4 с. Journal article local Спортивная тренировка. Методика. Нагрузка. Спортивные результаты. 796.015 Aleksandrova V A Skotnikova A V Bykovskaya D F Serikova Yuliya Nikolaevna uchzapiski.lesgaft.spb.ru