Wygralak, Maciej <br/><br/>
Vaguely defined objects  representations, fuzzy sets and nonclassical cardinality theory 
Maciej Wygralak 
 - Dordrecht  Kluwer Academic Publishers  1996 
 - 265 p. ;  25 cm. 
 - Theory and decision library / Series B, Mathematical and statistical methods  v.33 .
<br/><br/>p. 243-250. 
<br/><br/><label>ISBN: </label>0792338502  RM405.30 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Fuzzy sets.<br/>Many--valued logic.<br/>Numbers, Cardinal.