Gupieniec, Romana. “Remarks on Changes in Wooden Architecture at the Turn of the Early and Late Middle Ages”. Acta Universitatis Lodziensis. Folia Archaeologica, no. 16 (January 1, 1992): 221–239. Accessed December 9, 2025. https://www.czasopisma.uni.lodz.pl/archaeo/article/view/16496.