Policy in Post-Communist Bulgaria. I.B. Tauris: 64. 2011. Ultra-nationalists, populists form 'Bulgarian Patriots' alliance for July elections. The Sofia
義陣營,令骨牌理論出現逆轉。後該理論又曾使用在獨裁國家民主化之上。 Leeson, Peter T.; Dean, Andrea. The Democratic Domino Theory. American Journal of Political Science. 2009, 53 (3): 533–551
Burundi) 保加利亚 保加利亚独立工会联盟(英语:Confederation of Independent Trade Unions of Bulgaria)、劳工联盟“支持”(英语:Confederation of Labour Podkrepa) 柬埔寨 柬埔寨王国工人自由工会(英语:Free