NIKOV, K.; GEORGIEVA, R. Необичайни гробове край с. Полски Градец (Югоизточна България): Unusual graves near the village of Polski Gradets (southeastern Bulgaria). Bulgarian e-Journal of Archaeology Supplements | Българско е-Списание за Археология Supplementa, [S. l.], v. 10, p. 157–175, 2023. Disponível em: https://be-ja.org/index.php/supplements/article/view/317. Acesso em: 17 apr. 2024.