1. Potential for large-scale energy storage in electric utility systems;Kalhammer;ASME Paper 74-WA/ENER-9,1974
2. Energy storage for the electric power industry;Keller,1974
3. Use of flywheels for energy storage;Rabenhorst,1974
4. Creative electric load management;Laaspere;IEEE Spect.,1975
5. Energy Storage I, II;Laaspere;Science,1974