| 1 (1131) | Bulgarian Academy of Sciences * | BGR |  |
| 2 (2356) | Institute for Nuclear Research and Nuclear Energy Bulgarian Academy of Sciences | BGR | |
| 3 (2460) | Institute of Mathematics and Informatics Bulgarian Academy of Sciences | BGR | |
| 4 (2492) | University of Plovdiv Paisii Hilendarski | BGR |  |
| 5 (3144) | Sofia University | BGR | |
| 6 (3458) | Institute of Information and Communication Technologies Bulgarian Academy of Sciences | BGR | |
| 7 (3602) | Technical University of Sofia | BGR | |
| 8 (3696) | South West University Neofit Rilski | BGR | |
|
