1. Reciprocal beating induced by ventricular pacing;Barold, S.S.; Linhart, J.W.; Samet, P.;Circulation,1968
2. Analogy of electronic pacemaker and ventricular parasystole with observations on refractory period, supernormal phase, and synchronization;Burchell, H.B.;Circulation,1963
3. Retrograde conduction in complete heart block;Castillo, C.; Samet, P.;Brit. Heart J,1967
4. The occurrence of auricular contractions in a case of incomplete and complete heart-block due to stimuli received from the contracting ventricles;Cohn, A.E.; Fraser, F.R.;Heart,1914
5. Atrioventricular dissociation with intact retrograde conduction;Fletcher, E.; Morton, P.;Brit. Heart j,1968