1. Williams DF, The Williams Dictionary of Biomaterials (Liverpool, UK: Liverpool University Press, 1999), 40
2. Bisping HJ and Rupp H. A new permanent transvenous electrode for fixation in the atrium. In Watanabe Y (ed), Proceedings of the Vth International Symposium on Cardiac Pacing. Amsterdam, Exerpta Medica, pp. 543–547, 1977
3. Citron P and Dickhudt E. US Patent No. 3959502, Endocardial electrode. 1976
4. Anderson JA. Inflammatory response to implants. ASAIO II(2):101–107, 1988
5. Chardack W, Gage A and Greatbatch W. Correction of complete heart block by a self contained and subcutaneously implanted pacemaker. J Thorac Cardiovasc Surg 42:814, 1961