1. Harris JA. Application of the Hair Diameter Index (HDI) in Obtaining a Target Hair Density. Poster presented at the 11th Annual Scientific Meeting of the International Society of Hair Restoration Surgery. New York, New York, USA, October 2003.
2. The Cross-section Trichometer: A New Device for Measuring Hair Quantity, Hair Loss, and Hair Growth
3. Arnold J. Hair Mass Index. Presented at the 4th Annual Congress European Society of Hair Restoration Surgery, Barcelona, 2001.
4. Harris JA. Biodiversity of Hair Shaft Diameters: A Statistical Analysis. Poster presented at the 11th Annual Scientific Meeting of the International Society of Hair Restoration Surgery. New York, New York, USA, October 2003.
5. Harris JA. Introduction of the Hair Volume Index (HVI) and Its Correlation to Subjective Visual Hair Density. Scientific Session presentation and poster presented at the 11th Annual Scientific Meeting of the International Society of Hair Restoration Surgery. New York, New York, USA, October 2003.