1. Widmer L. K., Kamber V., leu H. J. Classification of venous disorders. In: Peripheral Venous Disorders. Widmer L. K. (ed.). Hans Huber Publishers Berne, 1978.
2. Rutherford R. B., Padberg F. T., Comerota A. J., Kistner R. L., Meissner M. H., Moneta G. L. Venous severity scoring: An adjustment to venous outcome assessment.J Vasc Surg, 2, 31, p. 1307–12.
3. Spina T., Peruzzi G.et al. The CEAP classification of 498 patients = 749 limbs.International Angiology, 21, 20, Suppl. 1 to N° 2 p. 186 (Abstract for the UIP World Congress).
4. Abenhaim L., Clément D., Norgren L.et al. The management of chronic venous disorders of the leg: An evidence-based report on an International Task Force.Phlebology, 1999, 14 (suppl. 1).
5. Partsch H. Communication in Hawaii during the Pacific Vascular Meeting Nov. 1996.