Datenquelle: GND
Balgarskata mladež 2018/2019
Sofija : Fondacija Fridrich Ebert Bjuro Bălgarija, 2019Youth study Bulgaria 2018/2019
Berlin : Friedrich-Ebert-Stiftung, Referat Mittel- und Osteuropa, 2019Mladite chora v Evropejska Bălgarija
sociologičeski portret 2014Sofia : Friedrich-Ebert-Stiftung, Bjuro Bălgarija, 2014Young people in European Bulgaria
a sociological portrait 2014Sofia : Friedrich-Ebert-Stiftung, Office Bulgaria, 2014