Valerie Hazan

The development of contrastiveness in profoundly deaf children's speech.

E. Abberton, A. Fourcin, Valerie Hazan, 1990, Clinical linguistics & phonetics.

Speech pattern audiometry for clinical use.

E. Abberton, A. Fourcin, G. Wilson, 1995, European journal of disorders of communication : the journal of the College of Speech and Language Therapists, London.