Dobrovolskiy, Andriy. «INCREASE OF INFORMATION CAPACITY OF SIGNAL DEVICES, INTENDED FOR STATE FRONTIER PROTECTION». Scientific Works of Vinnytsia National Technical University, no. 2 (Листопад 25, 2015). дата звернення Травень 7, 2026. https://works.vntu.edu.ua/index.php/works/article/view/416.