1. Review of early pacemaker development;Elmqvist;Pacing Clin Electrophysiol,1978
2. A transistorised, self-contained, implantable pacemaker for the long-term correction of complete heart block;Chardack;Surgery,1960
3. Cardiac pacing: memories of a bygone era;Mond;Pacing Clin Electrophysiol,2008
4. The early history of cardiac surgery in New Zealand;Barratt-Boyes;Heart Lung Circ,2003
5. Resuscitation of the heart in ventricular standstill by external electric stimulation;Zoll;N Engl J Med,1952