Non-observed economy in national accounts :  survey of country practices. 

 - New York :  United Nations,  2008. 
 - 340p. 
<br/><br/> "United Nations Economic Commission for Europe." 
<br/><br/><label>ISBN: </label>9789211169874 
<br/><br/><label>ISSN: </label>0069-8458 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Informal sector (Economics)--Statistics.<br/>National income--Accounting.