Köster, Olaf, Roland Kehrein, Karen Masthoff, and Yasmin Hadj Boubaker. “The Tell-Tale Accent: Identification of Regionally Marked Speech in German Telephone Conversations by Forensic Phoneticians”. International Journal of Speech, Language and the Law 19, no. 1 (June 22, 2012): 51–71. Accessed April 16, 2025. https://journal.equinoxpub.com/IJSLL/article/view/6039.