1. 24chasa . 2016a. Karakachanov: Opastnostta Bulgariq da Bude Zaliata Ot Migrant E Ogromna [Karakachanov: The Danger of Bulgaria Being Flooded by Migrants is Huge]. Accessed November 29 2016. https://www.24chasa.bg/novini/article/5903910.
2. 24chasa . 2016b. “Tsacheva: Kato President Shte Garantiram Dobriqt Sinhron … [Tsacheva: As President I Will Guarantee the Good].” Accessed October 22 2016. https://www.24chasa.bg/novini/article/5827765.
3. Albertazzi, D., and D. McDonnell. 2008. “Introduction: The Sceptre and the Spectre.” In Twenty-First Century Populism: The Spectre of Western European Democracy, edited by D. McDonnell and D. Albertazzi, 15–29. Basingstoke: Palgrave Macmillan.
4. Avramov, K. 2015. “The Bulgarian Radical Right. Marching Up from the Margins.” In Transforming the Transformation? The East European Radical Right in the Political Process, edited by M. Minkenberg, 299–318. London: Routledge.
5. bulpress.info . 2016. “ Gen. Rumen Radev: Nashite Deca Napuskat Evropa a Pravitelstvoto Gi Zameniq S Bejanci (Gen. Rumen Radev: Our Children are Leaving for Europe and the Government is Replacing Them with Refugees.” Accessed October 30 2016. https://bulpress.info/ген-румен-радев-децата-заминават/.