Szekelyhidi, Laszlo <br/><br/>
Functional equations on hypergroups / 
Laszlo Szekelyhidi 
 - Singapore :  World Scientific,  c2013 
 - xvii, 191 p. ;  24 cm. 
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>9789814407007 9814407003 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Group theory<br/>Functional equations