IVKOV, Vesna. Tracing the Oldest Audio Recordings of Vocal Musical Tradition of Germans in Bačka: The Field Research of Gustav Kipers-Sonenberg in Bačka. Etnoantropološki problemi / Issues in Ethnology and Anthropology , [S. l.], v. 8, n. 2, p. 585–596, 2013. DOI: 10.21301/EAP.v8i2.12. Disponível em: https://eap-iea.org/index.php/eap/article/view/589. Acesso em: 21 apr. 2026.