1. The mechanisms of venous valve closure;Van Bemmelen PS;Its relationship to the velocity of reverse flow. Arch Surg.,1990
2. Selected Topics in Venous Disorders;Strandness Junior DE,1981
3. Introdução à ultra-sonografia vascular;Zwiebel WJ,1996
4. Just briefly prevention and treatment of leg ulcers;Wilson E;Health Trends.,1989
5. Management of chronic venous leg ulcers: A national clinical guideline