1. Nasal tip projection, ptosis and supratip thickening;Simons;Ear Nose Throat J,1982
2. A method of tip projection measurement;Goode,1984
3. Quantitative analysis of nasal tip projection;Crumley;Laryngoscope,1988
4. Proportions of the aesthetic face;Powell,1984
5. Rhinoplasty: a practical guide for surgical planning;Byrd;Plast Reconstr Surg,1993