1. ?Artificial Heart Devices and Systems: A Conceptual Phase Study?, Contract No. PH 43-65-1058, Stanford Research Institute (January 1966).
2. F. N. Huffman, R. J. Harvey, and S. S. Kitrilakis, ?Design of an Implantable, Rankine-Cycle, Radio-isotope Power Source?. Paper presented at theIntersociety Energy Conversion Engineering Conference, Miami Beach, Florida (August 1967) p. 750.
3. M. Beltzer,J. Electrochem. Soc.,114 (1967) 1200.
4. R. F. Drake, ?Implantable Fuel Cell For an Artificial Heart?,Proc. The Artificial Heart Program Conference, Washington, D.C. (June 1969) p. 869.
5. J. Batzold and M. Beltzer, ?Feasibility Studies ? Implantable Biological Fuel Cell?,ibid., p. 817.