P. HELRAKUL, P. H. A Tutoria.l Introduction to Linea.r Control Systems Theory. Engineering and Applied Science Research, [S. l.], v. 1, n. 1, p. 49–74, 2013. Disponível em: https://ph01.tci-thaijo.org/index.php/easr/article/view/8099. Acesso em: 26 apr. 2025.