Літвіх, Віктор, and Жанна Паляничко. 2019. “INVESTIGATION OF A LINEAR RMS VOLTAGE CONVERTER WITH MUTUALLY INVERSE QUAD UNITS USING NATIONAL INSTRUMENTS MULTIFUNCTION DATA ACQUISITION DEVICE PCI 6221”. Electrotechnic and Computer Systems, no. 6(82) (February), 169-72. http://eltecs.opu.ua/index.php/journal/article/view/1131.