BOSHNAKOV, Venelin; GOEV, Valentin. STUDIES OF THE SHADOW ECONOMY IN BULGARIA: A REVIEW ARTICLE. KNOWLEDGE - International Journal , [S. l.], v. 65, n. 1, p. 97–102, 2024. Disponível em: https://ikm.mk/ojs/index.php/kij/article/view/6900. Acesso em: 27 sep. 2024.