Petrova, Desislava, and Lyubomir Lazov. “HIGHER EDUCATION IN THE REPUBLIC OF BULGARIA AT THE CROSSROAD - PROBLEMS AND MEASURES TO PREVENT THEM”. SOCIETY. INTEGRATION. EDUCATION. Proceedings of the International Scientific Conference 2 (May 20, 2020): 214–226. Accessed November 23, 2024. https://journals.ru.lv/index.php/SIE/article/view/5158.