1. Kinetic energy storage: theory and practice of advanced flywheel systems;Genta,1985
2. An assessment of integrated flywheel system technology;Keckler;NASA CP 2346,1984
3. Flywheels;Post;Sci Am,1973
4. Composite flywheels;Portnov,1989
5. Flywheel technology;Bitterly;IEEE AES Syst Mag,1998