Ninoslav Stojadinović, a friend of many, passed away on December 25, 2020, after one month of fight with Covid-19. Ninoslav, for friends Nino, was a chairman of many conferences, editor of many scientific journals, well-known and famous professor, a highly respected mentor to his students, and a role model for colleagues.He was Editor-in-Chief of the scientific journal Facta Universitatis, Series: Electronics and Energetics (University of Niš) in the period 2013-2020
