Impossible arithmetic.  [electronic resource] 

 -  Nature  Feb 2011 
 - 305 p.  digital 
<br/><br/> Publication Type: Editorial 
<br/><br/><label>ISSN: </label>1476-4687 
<br/><br/><label>Standard No.: </label>10.1038/470305a  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Budgets--legislation & jurisprudence<br/>Federal Government<br/>Lobbying<br/>Research--economics<br/>Research Personnel<br/>Research Support as Topic--legislation & jurisprudence<br/>Taxes--economics<br/>United States