Quarterly report pursuant to Section 13 or 15(d)

Stock-based compensation (Details)

v3.19.3
Stock-based compensation (Details) - USD ($)
3 Months Ended 6 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Fair value of stock-options granted to an employee (Note 15) $ 36,347 $ 174,249 $ 50,175 $ 174,249
Stock-options [Member]        
Fair value of stock-options granted to an employee (Note 15) $ 36,347 $ 174,249 $ 50,175 $ 174,249