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| Allen, Leslie. "Th!nk Will Launch U.S. Business." AUTOMOTIVE NEWS. 21 April 2008. |
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| "EnerDel for Th!nk City; EnerDel Taps Investor Itochu Corp As It Prepares Batteries for Norway." Fleets and Fuels. 14 April 2008. |
| EnerDel AND A123 for Think; Zebra from Switzerland's MES-DEA Too As Norwegian Firm Unveils New Models. Fleets and Fuels. 17 March 2008. |
| Shirouzu, Norihiko. "Race to Make Electric Cars Stalled by Battery Problems --- GM, Toyota Seek Ways To Snuff Out Fire Risk; Start-Ups See Opening." Wall Street Journal. 11 January 2008. |
| O'Malley, Chris. BIG HOPES FOR SMALL CAR. Indianapolis Business Journal. 18 February 2008. |
| Berman, Bradley. "The Quest for a Better Battery." Businessweek.com. 22 January 2008. |
| Allen, Leslie. "US: Ener1 to launch automotive lithium-ion battery next year." Automotive News. 18 December 2007. |
| Fox Business. Television-National. Interview with Alexis Glick. 11 December 2007. |
| Evanoff, Ted. "Powering a new energy idea." Indianapolis Star. 1 December 2007. |
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| Staff Reporter. "US: EnerDel developing lithium-ion battery packs for hybrid cars." Automotive World. 9 May 2006. |
| Staff Reporter. "Ener1 Inc. to Discuss Its Hybrid Battery and Fuel Cell Technology at Next Generation Energy Conference; Batteries to Provide More Power in." Business Wire. May 8 2006. |
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| Staff Reporter. "ENER1 INC - EBITDA for Ener1 Improves 86%." Stock Diagnostics. 16 March 2006. |
| Staff Reporter. "Indiana Inventors Develop Rechargeable Battery Pack." US Fed News. 3 March 2006. |
| Staff Reporter. "Ener1 Receive $5.52 Million in Financing." Battery & EV Technology. 1 March 2006. |
| Staff Reporter. "Fuel Cell Developer Moves to Larger Facility." Primedia Insight. 28 February 2006. |
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| Staff Reporter. "Business Briefs: Broward Firm Names New CEO." The Miami Herald. 18 January 2006. |
| Staff Reporter. "INDUSTRY NEWS Japan's SBIC Funds Ener1 Lithium R&D." Battery & EV Technology. 1 January 2006. |