1. Syncopal attacks, associated with prolonged arrest of the whole heart;Laslett;Q J Med,1909
2. Observations on sino-auricular heart block;Levine;Arch Intern Med,1916
3. The Mechanism and Graphic Registration of the Heart Beat;Lewis,1925
4. Sino atrial Heart Block;Greenwood,1964
5. Sino-atrial block and sick sinus syndrome;Bouvrain;Arch Mal Coeur,1967