Sources;
- Stefan Alexandrov, Piotr Włodarczak: Early Bronze Age Pamukli bair barrow near Malomirovo and the problem of east-oriented barrow graves in Upper Thrace, 2023 Sprawozdania Archeologiczne 75(1):213-245
- DIANA DIMITROVA – STEFAN ALEXANDROV – PIOTR WŁODARCZA, Chronology of Gabrova Mogila and Shekerdzha Mogila near Kamen, Sliven Province, in:2024, From the Steppes to the Balkans Yamna Culture in Upper Thrace