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10. Warrants (Tables)
9 Months Ended
Dec. 31, 2015
Warrant activity
    Amount     Range of
Exercise
Price
    Weighted
Average
Exercise
Price
 
Warrants outstanding at March 31, 2015     1,430,738       $2.10 - $15.00     $ 6.84  
Exercised     (12,049     $2.10 - $5.40     2.15  
Issued     746,656       $6.30     $ 6.30  
Cancelled/Expired     (1,252     $2.10     2.10  
Warrants outstanding at December 31, 2015     2,164,093       $2.10 - $15.00     $ 6.68  
Warrants exercisable at December 31, 2015     2,164,093       $2.10 - $15.00     $ 6.68  
Warrants  
Assumptions used
Risk free interest rate 1.70%
Average expected life 5 years
Expected volatility 98.6%
Expected dividends None