Annual report pursuant to Section 13 and 15(d)

2. Receivables (Tables)

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2. Receivables (Tables)
12 Months Ended
Dec. 31, 2012
Receivables Tables  
Accounts receivable

Accounts receivable at December 31, 2012 and 2011, consist of the following:

 

    2012     2011  
                 
Billed-federal government   $ 664,533     $ 2,961,279  
Billed-commercial and other     73,892       70,100  
Total billed     738,425       3,031,379  
Unbilled     -       -  
Allowance for doubtful accounts     (381 )     (141,721 )
Accounts receivable, net   $ 738,044     $ 2,889,658