| 1 (668) | Bulgarian Academy of Sciences * | BGR |  |
| 2 (1077) | Sofia University | BGR |  |
| 3 (1235) | Institute for Nuclear Research and Nuclear Energy Bulgarian Academy of Sciences | BGR | |
| 4 (3242) | Medical University of Sofia * | BGR | |
| 5 (4446) | University of Plovdiv Paisii Hilendarski | BGR | |
| 6 (5259) | Medical University - Plovdiv | BGR | |
| 7 (5801) | Technical University of Sofia | BGR | |
| 7 (5801) | Institute of Biodiversity and Ecosystems Research Bulgarian Academy of Sciences | BGR | |
| 9 (6122) | Institute of Mathematics and Informatics Bulgarian Academy of Sciences | BGR | |
| 10 (6207) | Trakia University | BGR | |
| 11 (6864) | Institute of Organic Chemistry with Centre of Phytochemistry Bulgarian Academy of Sciences | BGR | |
| 12 (6927) | University of Chemical Technology and Metallurgy | BGR | |
| 13 (7089) | University of Rousse | BGR | |
| 14 (7165) | South West University Neofit Rilski | BGR | |
| 15 (7231) | University of Forestry Sofia | BGR | |
| 16 (7291) | Institute of General and Inorganic Chemistry Bulgarian Academy of Sciences | BGR | |
| 17 (7343) | Georgi Nadjakov Institute of Solid State Physic Bulgarian Academy of Sciences | BGR | |
| 17 (7343) | University Prof. Dr. Assen Zlatarov | BGR | |
| 17 (7343) | Institute of Mechanics Bulgarian Academy of Sciences | BGR | |
| 17 (7343) | Technical University of Varna | BGR | |
| 21 (7386) | University of Food Technologies, Plovdiv | BGR | |
| 21 (7386) | Academician Emil Djakov Institute of Electronics Bulgarian Academy of Sciences | BGR | |
| 23 (7453) | Institute of Information and Communication Technologies Bulgarian Academy of Sciences | BGR | |
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