Quarterly report pursuant to sections 13 or 15(d)

6. Accounts Payable and Accrued Expenses

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6. Accounts Payable and Accrued Expenses
6 Months Ended
Jun. 30, 2013
Notes to Financial Statements  
6. Accounts Payable and Accrued Expenses

6.     Accounts Payable and Accrued Expenses

Accounts payable and accrued expenses consist of the following at June 30, 2013 and December 31, 2012:

 

    June 30, 2013   December 31, 2012
    (unaudited)    
Trade accounts payable   $ 6,600,072     $ 8,800,525  
Accrued expenses     700,593       993,618  
Accrued payroll and vacation     74,609       113,860  
Interest payable     250,187       93,458  
Deferred revenue     13,070       21,947  
Other     801,990       556,088  
Total accounts payable and accrued expenses   $ 8,440,521     $ 10,579,496