Quarterly report pursuant to Section 13 or 15(d)

10. Warrants (Details - Warrant activity)

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10. Warrants (Details - Warrant activity) - Warrant [Member]
6 Months Ended
Sep. 30, 2017
$ / shares
shares
Warrants outstanding, beginning 2,604,096
Warrants exercised 0
Warrants issued 0
Warrants cancelled/expired (139,357)
Warrants outstanding, ending 2,464,739
Warrants exercisable 2,464,739
Range of exercise prices, warrants beginning $2.10 - $12.05
Range of exercise prices, warrants cancelled/expired $5.00 –$15.00
Range of exercise prices, warrants ending $2.10 - $12.05
Range of exercise prices, warrants exercisable $2.10 - $12.05
Weighted average exercise price, warrants beginning | $ / shares $ 3.64
Weighted average exercise price, warrants cancelled/expired | $ / shares 6.52
Weighted average exercise price, warrants ending | $ / shares 3.48
Weighted average exercise price, warrants exercisable | $ / shares $ 3.48