1. Faculty of Electrical Engineering, “Gheorghe Asachi” Technical University of Iasi, Profesor Dimitrie Mangeron, No. 23, 700050 Iasi, Romania
2. Q SRL, Stradela Sfantul Andrei, No. 13, Iasi, Romania
3. Institute of Electrical Engineering, Chinese Academy of Sciences, No. 6, Beiertiao, Zhongguancun, Beijing, China