| 1 (636) | Bulgarian Academy of Sciences * | BGR |  |
| 2 (761) | Sofia University | BGR |  |
| 3 (780) | University of Food Technologies, Plovdiv | BGR | |
| 4 (785) | Institute of General and Inorganic Chemistry Bulgarian Academy of Sciences | BGR | |
| 5 (794) | Institute of Organic Chemistry with Centre of Phytochemistry Bulgarian Academy of Sciences | BGR | |
| 6 (799) | Medical University of Sofia * | BGR | |
| 7 (837) | University of Chemical Technology and Metallurgy | BGR | |
| 8 (847) | University of Plovdiv Paisii Hilendarski | BGR | |
| 8 (847) | University Prof. Dr. Assen Zlatarov | BGR | |
| 10 (858) | Trakia University | BGR | |
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