1. A. L. Maples and D. R. Poirier: Report No. 80HV007, vol. I, General Electric Company, Huntsville, AL, 1980.
2. A. L. Maples and D. R. Poirier: Report No. 80HV007, General Electric Company, Huntsville, AL, 1980, vol. II.
3. A. L. Maples and D. R. Poirier: Report No. 80HV007, General Electric Company, Huntsville, AL, 1980, vol. III.
4. A. L. Maples and D. R. Poirier: Report No. 81HV001, vol. I, General Electric Company, Huntsville, AL, 1981.
5. A. L. Maples and D. R. Poirier: Report No. 81HV001, General Electric Company, Huntsville, AL, 1981., vol. II.