1 (513) | Bulgarian Academy of Sciences * | BGR | ||
2 (520) | University of Chemical Technology and Metallurgy | BGR | ||
3 (624) | Sofia University | BGR | ||
4 (625) | University of Rousse | BGR | ||
5 (655) | Technical University of Varna | BGR | ||
6 (657) | Technical University of Sofia | BGR | ||
7 (666) | University of Plovdiv Paisii Hilendarski | BGR | ||