00741naa#a2200169#i#450# EN\\bibl\123447 20260706075525.1 1994-4683 20230731b2023####ek#y0engy0150####ca RU CONDITIONS FOR THE DEVELOPMENT OF STRONG-WILLED QUALITIES OF ADOLESCENTS THAT CONTRIBUTE TO ACHIEVING SPORTING SUCCESS Journal article Moscow National State University of Physical Education, Sports and Health named after P.F. Lesgaft 2023 5 с. Journal article local Психологические исследования, опыты, эксперименты, тесты, измерения. 159.9.072 Karyakin R E uchzapiski.lesgaft.spb.ru