ALIFIROV, A. . CONCEPTUAL APPROACHES TO THE TRAINING OF CHESS REFEREES. Theory and Practice of Physical Culture, [S. l.], n. 9, p. 47–49, 2022. Disponível em: http://tpf1610220.nichost.ru/index.php/TPPC/article/view/391. Acesso em: 8 feb. 2025.