1. The Senile Heart, Its Symptoms, Sequelae and Treatment;Balfour,1896
2. Old Age: The Major Involution;Warthin,1929
3. Electrocardiographic findings in the aged;Mihalick;Am Heart J,1974
4. The octogenarian electrocardiogram;Gelfand;Geriatrics,1957
5. The cardiology of old age;Gavey;Lancet,1949