Gergova, D., I. Iliev, and V. Rizzo. “Evidence of a Seismic Event on Thracian Tombs Dated to the Hellenistic Period (Sveshtari, Northeastern Bulgaria)”. Annals of Geophysics 38, no. 5-6 (November 25, 1995). Accessed May 1, 2024. https://www.annalsofgeophysics.eu/index.php/annals/article/view/4089.