A. Radiņš, “Prekybos Dauguvos žemupyje X-XIII amžiuje organizavimo klausimu”, AL, vol. 7, pp. 212–220, Dec. 2006, Accessed: Apr. 18, 2025. [Online]. Available: https://www.zurnalai.vu.lt/archaeologia-lituana/article/view/30418