1. Faculty of Physics, Doctoral School, Babeş-Bolyai University, Cluj-Napoca, Romania
2. Faculty of Material and Environmental Engineering, Technical University of Cluj-Napoca, Cluj-Napoca, Romania
3. Faculty of Physics, National Centre of Magnetic Resonance, Babes-Bolyai University, Cluj-Napoca, Romania
4. RTC Amethyst Cluj, Cluj, Romania