1 (787) | Bulgarian Academy of Sciences * | BGR | ||
2 (856) | Sofia University | BGR | ||
3 (911) | Technical University of Varna | BGR | ||
4 (916) | South West University Neofit Rilski | BGR | ||
4 (916) | University of Plovdiv Paisii Hilendarski | BGR | ||
6 (949) | Technical University of Sofia | BGR | ||