Lyashenko Valentina Nikolaevna. Confidence as a determinant of trained athletes ready for competition activity : к.фіз.вих. : spec.. 24.00.01 - Олімпійський і професійний спорт : presented. 2010-12-22; popup.evolution: .; National University of physical education and sport of Ukraine. – , 0411U000125.

Updated: 2026-11-10