1. Nail surgery and traumatic abnormalities;Zook,2001
2. Nail biopsy. Indications and methods;Rich;J Dermatol Surg Oncol,1992
3. Quantification of regional matrix nail production;De Berker;Br J Dermatol,1996
4. Keratin expression in the normal nail unit: markers of regional differentiation;De Berker;Br J Dermatol,2000
5. Longitudinal melanonychia;Krull,2001