1. Abercrombie, D. (1964) English Phonetic Texts, London: Faber & Faber.
2. Mr Akbar's nearest ear versus the Lombard reflex: a case study in forensic phonetics
3. Grigoras, C. (2003) `Digital audio recordings analysis - the electronic network frequency', paper presented at the International Association for Forensic Phonetics Conference, Vienna.
4. Hirson, A., French, J. P. and Howard, D. (1995) `Speech fundamental frequency over the telephone and face-to-face: some implications for forensic phonetics', in J. Windsor Lewis (ed.), Studies in General and English Phonetics in Honour of Professor J.D. O'Connor, London: Routledge, 230-40.