Each of the articles on this site (and more you can find here) includes masses of academic references and links to other materials.
As well, here are few useful links related to Forensic Transcription (in no particular order) that you might find interesting
International Association for Forensic Phonetics and Acoustics (IAFPA) http://www.iafpa.net/ International Journal of Speech Language and the Lawhttps://journals.equinoxpub.com/index.php/IJSLL/index