References
- Orticochea Migual. Construction of a dynamic muscle sphincter in cleft palates. Plastic & Reconstructive Surgery. 1968
- Skolnik Leon M. Video fluoroscopic examination of velopharyngeal portal during phonation in lateral and base projections - a new technique for studying the mechanics of closure. Cleft Palate Journal 1970; 7: 803–816
- Skolnik Leon M., McCall N Gerald. A radiographic technique for demonstrating the causes of persistent nasality in patients with pharyngeal flaps. British Journal of Plastic Surgery 1973; 26: 12–15