IRAWAN, Y.; WAHYUNI, R.; HERIANTO, H. Morse Code Receiver On Invisible Light Using Background Subtraction Method. Journal of Robotics and Control (JRC), [S. l.], v. 2, n. 4, p. 283–286, 2021. DOI: 10.18196/jrc.2492. Disponível em: https://journal.umy.ac.id/index.php/jrc/article/view/10128. Acesso em: 5 sep. 2025.