Jessen, Marianne. “Phonetic Manifestations of Cognitive and Physical Stress in Trained and Untrained Police Officers”.
International Journal of Speech, Language and the Law 4, no. 1 (July 1, 1997): 125–147. Accessed April 16, 2025.
https://journal.equinoxpub.com/IJSLL/article/view/9890.