NZUMILE, J. M. A Comparison of Beat Frequency Estimation Methods for Large Ring Laser. Journal of Science and Technology, [S. l.], v. 13, n. 1, p. 30–37, 2021. Disponível em: https://publisher.uthm.edu.my/ojs/index.php/JST/article/view/7473. Acesso em: 3 oct. 2023.