SZEKELYHIDI, L. <br/><br/>
FUNCTIONAL EQUATIONS ON HYPERGROUPS 

 - LONDON  WORLD  2013 
 - xvii+191p.;23x15Cms. 
<br/><br/><label>ISBN: </label>978981440700 
<br/><br/><label>Dewey Class. No.: </label>517.6 S995