KRAGNYS, R.; BARTKEVIČIUS, S. Peculiarity of Hybrid control systems modeling using Petri Nets. Elektronika ir Elektrotechnika, [S. l.], v. 62, n. 6, p. 72-81, 2005. Disponível em: https://eejournal.ktu.lt/index.php/elt/article/view/10455. Acesso em: 4 dec. 2021.