1. Paradoxical splitting of second heart sound;Gray;Brit. Heart J.,1956
2. Paradoxical splitting of the second heart sound;Gray;Brit. Heart J.,1957
3. Clinical auscultation of the heart;Levine,1959
4. Henry Ford Hospital; International symposium on etiology of myocardial infarction,1963
5. Paradoxical splitting of the second heart sound in coronary heart disease;Yurchak;New England J. Med.,1963