1. Ultracapacitor energy storage in a heavy-duty hybrid drive update;Bartley,2005
2. Fuel cells and ultracapacitors;Smith,2004
3. A 2000V ultracapacitor for transmission stability;Geist,2004
4. Ultracapacitors—the revolutionary component for power-intensive electronic products;Maher,2003
5. Additional results including power–energy relationships are in: J.R. Miller, Critical performance issues for electric vehicle load-leveling capacitors, in: W.A. Adams, A.R. Landgrebe, B. Scrosati (Eds.), Exploratory Research, Development of Batteries for Electric, Hybrid Vehicles, The Electrochemical Society Proceedings, vol. PV96-14, 1996, p. 16.