Rustagi, J.S <br/><br/>
Variational methods in statistics 
J.S. Rustagi 
 - New York  Academic Press  1976 
 - xiii  236 
 - Mathematics in science & engineering 121 .
<br/><br/><label>ISBN: </label>0126045607 
<br/><br/><label>Dewey Class. No.: </label>17  / RUST