| 1 (238) | University of Food Technologies, Plovdiv | BGR |  | |
| 2 (393) | Bulgarian Academy of Sciences * | BGR |  | |
| 3 (563) | Sofia University | BGR | | |
| 4 (568) | University of Forestry Sofia | BGR | | |
| 5 (601) | Institute of Biodiversity and Ecosystems Research Bulgarian Academy of Sciences | BGR | | |
| 6 (608) | University of Plovdiv Paisii Hilendarski | BGR | | |
| 7 (612) | Technical University of Sofia | BGR | | |
| 8 (617) | University of Rousse | BGR | | |
| 9 (625) | Technical University of Varna | BGR | |
