1. An endoscopic technique for restoration of voice after laryngectomy;Singer;Ann Otol,1980
2. Prosthetic vocal rehabilitation following laryngectomy;Panje;Ann Otol,1981
3. The Singer-Blom speech rehabilitation procedure;Wetmore;Laryngoscope,1981
4. Die Glottoplastik—eine neue Methode zur chirurgischen Stimmrehabilitation;Herrmann;HNO,1984
5. Surgical voice restoration procedures for laryngectomees: A review;Evans;Folia Phoniatr,1985