Annual report pursuant to Section 13 and 15(d)

2. Receivables (Tables)

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2. Receivables (Tables)
12 Months Ended
Dec. 31, 2013
Receivables Tables  
Accounts receivable
    2013     2012  
Billed-federal government   $ 1,197,454     $ 664,533  
Billed-commercial and other     214,653       73,892  
Total billed     1,412,107       738,425  
Unbilled     25,647       -  
Allowance for doubtful accounts     -       (381 )
Accounts receivable, net   $ 1,437,754     $ 738,044