| 1 (1820) | Bulgarian Academy of Sciences * | BGR |  |
| 2 (2459) | Institute for Nuclear Research and Nuclear Energy Bulgarian Academy of Sciences | BGR | |
| 3 (4132) | Sofia University | BGR |  |
| 4 (4311) | University of Chemical Technology and Metallurgy | BGR | |
| 5 (4482) | Medical University of Sofia * | BGR | |
| 6 (4692) | University of Plovdiv Paisii Hilendarski | BGR | |
| 7 (4713) | Trakia University | BGR | |
| 8 (5180) | Institute of Mathematics and Informatics Bulgarian Academy of Sciences | BGR | |
| 9 (5342) | Medical University, Plovdiv | BGR | |
| 10 (5565) | Institute of Biodiversity and Ecosystems Research Bulgarian Academy of Sciences | BGR | |
| 11 (5832) | Institute of Organic Chemistry with Centre of Phytochemistry Bulgarian Academy of Sciences | BGR | |
| 12 (6240) | Technical University of Sofia | BGR | |
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