1. Atlas of Congenital Cardiac Disease;Abbott, Maude E.,1936
2. Anomalie di numero delle valvole polmonari;Dagnini, G.;Cuore e Circol,1930
3. Tber Abweichungen in der Zahl der Semilunarklappen;de Vries, W.M.;Beitr. path. Anat,1918
4. The incidence of cardiac anomalies at the Massachusetts General Hospital;Houck, G.H.;J. techn. Meth,1929
5. Endocardial fibrosis. In Cardiovascular Pathology, Vol;Hudson, R.E.B.,1965