Annual report pursuant to Section 13 and 15(d)

17. Derivative Liability (Tables)

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17. Derivative Liability (Tables)
12 Months Ended
Dec. 31, 2015
Derivative Liability Tables  
Assumptions were used to determine the fair value of the warrants
    Year ended December 31,  
    2015     2014  
Stock price ($)     3.26       3.15  
Exercise price ($)     6.25       0 - 6.25  
Risk-free interest rate (%)     1.78 - 2.25       1.97 - 2.52  
Expected volatility (%)     132.99       106.2  
Time to maturity (years)     3.0 - 4.0       7.83 - 9.0