1) Christopoulos, D., Nicolaides, A. N., Szendro, G. et al.: Air-plethysmography and the effect of elastic compression on venous hemodynamics of the leg. J. Vase. Surg., 1987, 5: 148-159.
2) Christopoulos, D., Nicolaides, A. N., Cook, A. et al.: Pathogenesis of venous ulceration in relation to the calf muscle pump function. Surgery, 1989, 106: 829-835.
3) Welkei, J. F., Kerr, R. P., Katz, M. L. et al.: Can noninvasive venous volume determinations accurately predict ambulatory venous pressure? J. Vasc. Technol., 1991, 15: 186-190.