HILKO, Karol - JANČÁRIK, Vladimír. Design of the digital hysteresisgraph. In Electro-mechanical systems application in industry 2018 : Zliechov, Slovakia. August 28-31, 2018. 1.vyd. Bratislava : Vydavateľstvo Spektrum STU, 2018, S. 31-34. ISBN 978-80-227-4870-4. E*e-295/2018