Annual report pursuant to section 13 and 15(d)

6. Stockholders' Equity (Details)

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6. Stockholders' Equity (Details) (Warrants)
12 Months Ended
Dec. 31, 2012
Warrants
 
Risk-free interest rate 0.73%
Expected life in years 5 years
Dividend yield 0.00%
Expected volatility 63.65%