MICHALAK, A.; SOCHA, K. A sword scabbard chape with a depiction of a bird of prey from the surroundings of Kostrzyn. Slavia Antiqua. Rocznik poświęcony starożytnościom słowiańskim, [S. l.], n. 58, p. 159–174, 2018. DOI: 10.14746/sa.2017.58.10. Disponível em: https://pressto.amu.edu.pl/index.php/sla/article/view/13110. Acesso em: 4 luty. 2023.