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11. WARRANTS (Tables) | 6 Months Ended
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Sep. 30, 2013
Derivative Instruments and Hedging Activities Disclosure [Abstract] |
Summary of warrant activity exercisable and outstanding | A summary of warrant activity during the six months ended September 30, 2013 is presented below:
|  | Number of Warrants |  |  | Range of Exercise Price |  | Weighted Average Exercise Price
Warrants outstanding at March 31, 2013 |  |  | 75,647,294 |  |  | $0.076 - $0.25 |  | $0.11
Exercised |  |  | (3,407,468 | ) |  | $0.11 |  | $0.11
Issued |  |  | 3,513,302 |  |  | $0.121-$0.167 |  | $0.13
Cancelled/Expired |  |  | (3,173,791 | ) |  | $0.11 |  | $0.11
Warrants outstanding at September 30, 2013 |  |  | 72,579,337 |  |  | $0.076 - $0.25 |  | $0.12
Warrants exercisable at September 30, 2013 |  |  | 72,579,337 |  |  | $0.076 - $0.25 |  | $0.12
Weighted average assumptions used to estimate the fair value, with respect to warrants utilizing the Binomial Lattice option pricing model |
Risk free interest rate | 1.53% - 2.04%
Average expected life | 7 years
Expected volatility | 91.2 – 96.0%
Expected dividends | None

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- Definition Weighted average assumptions used to estimate the fair value, with respect to warrants utilizing the Binomial Lattice option pricing model + References No definition available. + Details
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- Definition Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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