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Note 3 - Accounts Receivable, net (Tables)
 9 Months Ended
Dec. 31, 2012
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]
The following table sets forth the components of accounts receivable:

   
December 31,
2012
   
March 31,
2012
 
Government
 
$
338,924
   
$
1,272,436
 
Commercial
   
349,462
     
457,670
 
Less: Allowance for doubtful accounts
   
(35,470
)
   
(35,470
)
   
$
  652,916
   
$
1,694,636