1. Adolph RJ, Holmes JC, Fukusumi H. Hemodynamic studies in patients with chronically implanted pacemakers. Am Heart J 76: 829–838, 1968
2. Alpert MA, Curtis JJ, SanFelippo JF, Flaker GC, Walls JT, Mukerji V, Villarreal D, Katti SK, Madigan NP, Krol RB. Comparative survival after permanent ventricular dual chamber pacing for patients with chronic high degree atrioventricular block with and without préexistent heart failure. J Am Coll Cardiol 7: 925–932, 1986
3. Alpert MA, Curtis JJ, Sanfelippo JF, Flaker GC, Walls JT, Mukerji V, Villarreal D, Katti SK, Madigan NP, Morgan RJ. Comparative survival following permanent ventricular and dual-chamber pacing for patients with chronic symptomatic sinus node dysfunction with and without heart failure. Am Heart J 113: 958–965, 1987
4. Alt E, Heinz M, Theres H, Matula M, Blömer H. A new body motion activity-based rate-responsive pacing system (abstract). PACE 10: 422, 1987
5. Alt E, Schlegl MJ, Matula MM. Intrinsic heart rate response as a predictor of rate-adaptive pacing benefit. Chest 107: 925–930, 1995