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9. STOCK COMPENSATION (Details - Stock compensation) - USD ($) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2020 | Dec. 31, 2019
Total stock-based compensation expense | $ 377,958 | $ 102,576 | $ 629,207 | $ 755,648
Weighted average number of common shares outstanding- basic and diluted | 12,093,361 | 2,887,883 | 11,265,725 | 1,821,557
Basic and diluted loss per common share attributable to stock-based compensation expense | $ (0.20) | $ (0.28) | $ (0.50) | $ (2.52)
Vesting of stock options and restricted stock units [Member] |  |  |  |
Total stock-based compensation expense | $ 377,958 | $ 102,576 | $ 629,207 | $ 755,648
Share-Based Compensation [Member] |  |  |  |
Basic and diluted loss per common share attributable to stock-based compensation expense | $ (0.03) | $ (0.04) | $ (0.06) | $ (0.41)

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- Definition The amount of net income or loss for the period per each share in instances when basic and diluted earnings per share are the same amount and reported as a single line item on the face of the financial statements. Basic earnings per share is the amount of net income or loss for the period per each share of common stock or unit outstanding during the reporting period. Diluted earnings per share includes the amount of net income or loss for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=121326447&loc=d3e1337-109256 + Details
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- Definition Amount of noncash expense for share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585 + Details
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