1. Amon KW, Crawford MH (1979) Upright exercise echocardiography. J Clin Ultrasound 7: 373–376
2. Amon KW, Crawford MH (1982) Improved two-dimensional echocardiographic technique for left ventricular aneurysm detection. J Clin Ultrasound 10: 261–263
3. Asinger RW, Mikell FL, Sharma B, Hodges M (1981a) Observations on detecting left ventricular thrombus with two dimensional echocardiography: Emphasis on avoidance of false positive diagnoses. Am J Cardiol 47: 145–156
4. Asinger RW, Mikell FL, Elsperger J, Hodges M (1981b) Incidence of left-ventricular thrombosis after acute transmural myocardial infarction. Serial evaluation by two- dimensional echocardiography. N Engl J Med 305: 297–302
5. Autenrieth G, Angermann C, Goss F, Bolte H-D (1977) Belastungsechokardiographie bei Patienten mit koronarer Herzkrankheit. Verh Dtsch Ges Inn Med 83: 231–236