EPE EPE 2019 : 20th International scientific conference on electric power engineering. Kouty nad Desnou, Czech Republic. May 15-17, 2019. -- Ostrava : Technical University of Ostrava, 2019. -- ISBN : 978-1-7281-1334-0. -- 978-1-7281-1333-3 (USB). -- CFP1973X-USB. Altus, Juraj. Rusek, Stanislav. Baxant, Petr