Chabrzyk, Piotr. “An Early Mediaeval Coin-Hoard from Kartuzy in Pomerania”. Acta Archaeologica Lodziensia, vol. 61, Dec. 2018, pp. 63-66, https://journals.ltn.lodz.pl/Acta-Archaeologica-Lodziensia/article/view/2147.