Annual report pursuant to section 13 and 15(d)

11. Warrants (Details)

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11. Warrants (Details) (Warrants)
12 Months Ended
Dec. 31, 2012
Warrants
 
Risk-free interest rate 0.72%
Expected life in years 4 years 4 months 9 days
Dividend yield 0.00%
Expected volatility 70.28%