1. Angina pectoris at rest with preservation of exercise capacity;MacAlpin;Circulation,1973
2. Variant angina pectoris;Whiting;N Engl J Med,1970
3. Variant angina pectoris–Anatomic findings and prognostic implications;Silverman;Ann Intern Med,1971
4. Angina pectoris I. Variant form of angina pectoris;Prinzmetal;Am J Med,1959
5. Variant angina pectoris caused by coronary artery spasm;Hart;Am J Med,1974