Jagdish S, Rustagi <br/><br/>
Variational methods in statistics 

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 -  New York  Academic Press, 1976 
 - xii, 236 p.   
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<br/><br/><label>Subjects--Index Terms: </label>Calculus of probability  Statistical mathematics 
<br/><br/><label>Dewey Class. No.: </label>519.22