| 1 (1987) | Bulgarian Academy of Sciences * | BGR |  |
| 2 (2771) | Institute for Nuclear Research and Nuclear Energy Bulgarian Academy of Sciences | BGR | |
| 3 (4147) | Sofia University | BGR |  |
| 4 (4528) | University of Chemical Technology and Metallurgy | BGR | |
| 5 (4795) | University of Plovdiv Paisii Hilendarski | BGR | |
| 6 (5092) | Institute of Mathematics and Informatics Bulgarian Academy of Sciences | BGR | |
| 7 (5125) | Medical University - Plovdiv | BGR | |
| 8 (5171) | Medical University of Sofia * | BGR | |
| 9 (5377) | Academician Emil Djakov Institute of Electronics Bulgarian Academy of Sciences | BGR | |
| 10 (5954) | Trakia University | BGR | |
| 11 (6101) | Institute of Biodiversity and Ecosystems Research Bulgarian Academy of Sciences | BGR | |
| 12 (6170) | Institute of Information and Communication Technologies Bulgarian Academy of Sciences | BGR | |
| 13 (6226) | University of Rousse | BGR | |
| 14 (6356) | Technical University of Sofia | BGR | |
| 15 (6433) | Institute of General and Inorganic Chemistry Bulgarian Academy of Sciences | BGR | |
| 16 (6447) | Institute of Organic Chemistry with Centre of Phytochemistry Bulgarian Academy of Sciences | BGR | |
| 17 (6618) | Technical University of Varna | BGR | |
| 18 (6625) | South West University Neofit Rilski | BGR | |
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