| 1 (491) | Bulgarian Academy of Sciences * | BGR |  |
| 2 (537) | Institute for Nuclear Research and Nuclear Energy Bulgarian Academy of Sciences | BGR | |
| 3 (595) | Sofia University | BGR |  |
| 4 (639) | Georgi Nadjakov Institute of Solid State Physic Bulgarian Academy of Sciences | BGR | |
| 5 (689) | Academician Emil Djakov Institute of Electronics Bulgarian Academy of Sciences | BGR | |
| 6 (697) | University of Chemical Technology and Metallurgy | BGR | |
| 7 (719) | University of Plovdiv Paisii Hilendarski | BGR | |
| 8 (737) | Technical University of Sofia | BGR | |
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