T. ABDUL RAHMAN, Z.; T. AHMED, Z. Study of Resonator Properties of Stable and Unstable Lasers. Journal of Education and Science, [S. l.], v. 28, n. 4, p. 240–250, 2019. DOI: 10.33899/edusj.1970.163321. Disponível em: https://edusj.uomosul.edu.iq/index.php/edusj/article/view/41392. Acesso em: 10 sep. 2025.