Engel, Marcin, Piotr Iwanicki, and Aleksandra Rzeszotarska-Nowakiewicz. 2006. “‘Sudovia in Qua Sudovitae’ The New Hypothesis About the Origin of Sudovian Culture”. Archaeologia Lituana 7 (December): 184–211. https://www.journals.vu.lt/archaeologia-lituana/article/view/30417.