SCHMID, Wolfgang P. Das baltische Zentrum in der alteuropäischen Hydronymie. Baltistica, [S. l.], v. 33, n. 2, p. 145–153, 1998. DOI: 10.15388/baltistica.33.2.435. Disponível em: https://www.journals.vu.lt/baltistica/article/view/40203. Acesso em: 2 birž. 2026.