1 (1093) | Bulgarian Academy of Sciences * | BGR | ||
2 (1785) | Institute of Biodiversity and Ecosystems Research Bulgarian Academy of Sciences | BGR | ||
3 (2076) | Sofia University | BGR | ||
3 (2076) | University of Forestry Sofia | BGR | ||
5 (2442) | University of Plovdiv Paisii Hilendarski | BGR | ||