1 (447) | Bulgarian Academy of Sciences * | BGR | ||
2 (450) | University Prof. Dr. Assen Zlatarov | BGR | ||
3 (618) | Technical University of Varna | BGR | ||
4 (633) | Sofia University | BGR | ||
5 (635) | Technical University of Sofia | BGR | ||
6 (665) | University of Rousse | BGR | ||
6 (665) | University of Food Technologies, Plovdiv | BGR | ||