"Vicen� Torra, Anders Dahlbom, Yasuo Narukawa" <br/><br/>
"Fuzzy Sets, Rough Sets, Multisets and Clustering" 

 -  Springer  2017 
<br/><br/><label>ISBN: </label>978-3-319-47557-8 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Engineering; Computational Intelligence