CNN, By <a href="/profiles/helen-regan">Helen Regan</a>, <a href="/profiles/andrew-raine">Andrew Raine</a>, Sophie Tanno, Hafsa Khalil, <a href="/profiles/tori-powell">Tori B. Powell</a> and <a href="/profiles/adrienne-vogt">Adrienne Vogt</a> (24 de junho de 2023). «Live updates: Wagner head says group standing down after claims of deal». CNN (em inglês). Consultado em 24 de junho de 2023
Šmíd, Tomáš & Šmídová, Alexandra. (2021). Anti-government Non-state Armed Actors in the Conflict in Eastern Ukraine. Czech Journal of International Relations, Volume 56, Issue 2. pp.48–49. Quote: "Another group of Russian citizens who became involved in the armed conflict in Eastern Ukraine were members of the so-called right-wing units of the Russian Spring. Here we mean mainly extreme-right activists" ... "the members of Rusich around Milchakov are activists of various Russian extreme-right groups".
Clark, Mason; Barros, George; Hird, Karolina (20 de abril de 2022). «Russian Offensive Campaign Assessment, April 20». Institute for the Study of Warfare. Consultado em 16 de fevereiro de 2023. Arquivado do original em 25 de janeiro de 2023
Clark, Mason; Barros, George; Hird, Karolina (20 de abril de 2022). «Russian Offensive Campaign Assessment, April 20». Institute for the Study of Warfare. Consultado em 16 de fevereiro de 2023. Arquivado do original em 25 de janeiro de 2023