IBRAHEEM KHALEEL, K.; خليل; RASHED, A.; علي. The effect of Keller’s model is accompanied by direct mental training, focusing attention, and teaching volleyball skills to students. Al-Rafidain Journal For Sport Sciences (RJSS), [S. l.], v. 27, n. 85, p. 177–196, 2025. DOI: 10.33899/rjss.2024.185223. Disponível em: https://ojs.uomosul.edu.iq/index.php/rjss/article/view/11045. Acesso em: 4 aug. 2025.