TROEBST, S. Lampe, John R.: The Bulgarian Economy in the Twentieth Century. Südost-Forschungen, [S. l.], v. 1, n. 1, p. 485–492, 2021. Disponível em: https://www.suedost-forschungen.de/portal/index.php/sof/article/view/8978. Acesso em: 17 mai. 2024.