Institution: | 1. Institute of Biophysics, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Block 21, 1113 Sofia, Bulgaria;
2. Institute of Mechanics, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Block 4, 1113 Sofia, Bulgaria;
3. Institute for Theoretical Physics, Chinese Academy of Sciences, Beijing 100190, China |