Lozanov, Oleg, and Stela Zhivkova. “Development and Structure of the Bulgarian Export After the Country S Accession to the EU”. European Journal of Economics and Business Studies 3, no. 3 (October 6, 2017): 147–155. Accessed November 22, 2025. https://revistia.com/index.php/ejes/article/view/2965.