Figueiredo, Ricardo Molina de, and Helena Souza Britto. “A Report on the Acoustic Effects of One Type of Disguise”. International Journal of Speech, Language and the Law 3, no. 1 (June 1, 1996): 168–175. Accessed August 14, 2024. https://journal.equinoxpub.com/IJSLL/article/view/10115.