1. Internal pacemaker with external control of the stimulation threshold of the heart;Berg;Kon. med. Akad. Wet.,1967
2. The detection of impending pacewaker-failure in implanted pacemakers;Davies;Thorax,1969
3. Aids to electrical diagnosis of pacemaker failure;Decker;Amer. Heart J.,1965
4. Long-term cardiac pacing. Experience of fixed-rate pacing with an endocardial electrode in 260 patients;Edhag;Acta med. scand.,1969
5. Verlaufsbeobachtungen oszillographischer Impulsuntersuchungen bei implantierten Herzschrittmachern;Emmrich;Dtsch. Gesund.-Wes.,1968