1. Las valvulopathias reumaticas en 1000 casos;Chavez;Arch. Inst. cardiol. México,1958
2. Chronic cardiac valvular disease;Herrmann,1944
3. Rheumatic involvement of all four heart valves;Newton Pitt;Guy's Hosp. Rep.,1953
4. Organic and relative insufficiency of the pulmonary valve;McGuire;Am. Heart J.,1937