BAEVA, I. The day before the crash – Bulgarian‑Soviet relations in the nineteen eighties. Studia z Dziejów Rosji i Europy Środkowo-Wschodniej, [S. l.], v. 47, 2012. DOI: 10.12775/SDR.2012.15. Disponível em: https://apcz.umk.pl/SDR/article/view/SDR.2012.15. Acesso em: 4 jul. 2024.