ABAD, F. J.; OLEA, J.; PONSODA, V. Analysis of the optimum number alternatives from the Item Response Theory. Psicothema, [S. l.], v. 13, n. Número 1, p. 152–158, 2001. Disponível em: https://reunido.uniovi.es/index.php/PST/article/view/7860. Acesso em: 12 may. 2024.