Training as a method of preventing negative mental states of young schoolboys. Actual Problems of Psychology in Educational Institutions, [S. l.], v. 9, p. 189–193, 2018. DOI: 10.31812/psychology.v9i0.3767. Disponível em: https://journal.kdpu.edu.ua/psychology/article/view/3767. Acesso em: 6 dec. 2025.