00744naa#a2200193#i#450# EN\\bibl\111576 20260302192159.1 1994-4683 20240930b2024####ek#y0engy0150####ca RU The problem of early specialization and the formation of children's readiness for initial hockey lessons Journal article Moscow National State University of Physical Education, Sports and Health named after P.F. Lesgaft 2024 3 с. Journal article local Хоккей на льду с шайбой. 796.966 Kozin Vadim Vital'evich filatov viktor vladimirovich Filatov Yuriy Vladimirovich uchzapiski.lesgaft.spb.ru