1. Thermally activated (“thermal”) battery technology
2. R.A. Guidotti, Amer Inst Aeronaut & Astronaut (2000) 35th Intersociety Energy Conversion Engineering Conference & Exhibit 1&2:1276-1286.
3. R.A. Normann, R.A. Guidotti, C. Geothermal Resources (1996) Geothermal Development in the Pacific Rim 20:509-513.
4. D.E. Harney (1980) US Patent No. 4221849.