1. HUN-REN Research Centre for Natural Sciences, Magyar tudósok körútja 2., H-1117 Budapest, Hungary
2. HUN-REN Wigner Research Centre for Physics, Konkoly-Thege M. út 29-33., H-1121 Budapest, Hungary
3. International Research Organization for Advanced Science and Technology (IROAST), Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan