Mordeson, John N. <br/><br/>
Fuzzy semigroups / 
John N. Mordeson, Davender S. Malik, Nobuaki Kuroki. 
 - [S.l.] :  Springer,  2003. 
 - 328 p. ;  24 cm. 
 - Studies in fuzziness and soft computing) (V. 131. .
 - Studies in fuzziness and soft computing) (V. 131. .
<br/><br/><label>ISBN: </label>3540032436 9783540032434 
<br/><br/><label>Dewey Class. No.: </label>512.1