4) Sengstaken, R.W. and Blakemore, A.H.: Balloon tamponade for the control of hemorrhage from esophageal varices. Ann. Surg., 131: 781-789, 1950.
5) Lunderquist, A. and Vang, J.: Transhepatic catheterization and obliteration of the coronary vein in patients with portal hypertension and esophageal varices. N Engl J Med 291: 646-649, 1974.