1. A study of the electrical activity in the auricles;Abramson;Am. Heart J.,1938
2. Experimental left atrial rhythm;Rogel;Israel. J. M. Sc.,1966
3. Left atrial arrhythmias;Somlyo;Am. Heart J.,1963
4. Direct study of left atrial P waves;Massumi;Circulation,1967
5. Time relationship of right and left atrial depolarization in determining the origin of abnormal P waves;Tawakkol;Circulation,1967