1. Geothermal energy as a source of electricity;DiPippo,1980
2. Hot spots on the earth's surface. Continents adrift and continents aground;Burke;Scientific American,1976
3. Industrial and other applications of geothermal energy;Lindal,1973
4. Drilling for geothermal resources;Ryley,1980
5. Compound hybrid geothermal-fossil power plants: thermodynamic analyses and site-specific applications;DiPippo;J. Eng. for Power,1981