1. Status of research in cleft palate anatomy and physiology;Dickson;Cleft Palate J,1973
2. Articulatory additions to the classical description of the speech of persons with cleft palate;Trost;Cleft Palate J,1981
3. Velopharyngeal incompetence without overt cleft palate;Minami;Plast Reconstr Surg,1975
4. The occult submucous cleft palate;Kaplan;Cleft Palate J,1975
5. Velopharyngeal incompetency in the absence of overt cleft palate: Anatomic and surgical considerations;Trier;Cleft Palate J,1983