I. ALSAIF, K.; Q. ALQATHELY, Y.; T. CHALMERAN, N. Calculate weights for a numerical number image. Journal of Education and Science, [S. l.], v. 24, n. 4, p. 119–131, 1970. DOI: 10.33899/edusj.1970.58934. Disponível em: https://edusj.uomosul.edu.iq/index.php/edusj/article/view/41693. Acesso em: 10 sep. 2025.