| 1 (1743) | Stephan Angeloff Institute of Microbiology Bulgarian Academy of Sciences | BGR | |
| 2 (1916) | Bulgarian Academy of Sciences * | BGR | |
| 3 (2559) | Institute of Biophysics and Biomedical Engineering Bulgarian Academy of Sciences | BGR | |
| 4 (3753) | Institute of Organic Chemistry with Centre of Phytochemistry Bulgarian Academy of Sciences | BGR | |
| 5 (4232) | Institute of General and Inorganic Chemistry Bulgarian Academy of Sciences | BGR | |
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