FRYDRYCH, Piotr; SZEWCZYK, Roman. Capacitive human presence sensor for safety applications. Journal of Automation, Mobile Robotics and Intelligent Systems, [S. l.], v. 4, n. 3, p. 45–49, 2013. Disponível em: https://jamris.d.tomp.pl/index.php/JAMRIS/article/view/130. Acesso em: 15 may. 2025.