3Ross DN. Replacement of the aortic and mitral valves with a pulmonary autograft. Lancet, 1967,2:956 - 958.
4Ross D, Jackson M, Davies J. Pulmonary autograft aortic valve replacement: long- term results. J Card Surg, 1991,6(4 Suppl) :529 - 533.
5Randolph JD, Toal K, Stelzer P, et al. Aortic valve and left ventricular out flow tract replacement using allograft and autogrfat valves: a preliminary report. Ann Thorac Surg, 1989, 48:345 -349.