Media type: E-Article Title: Relational compositions in Fuzzy Class Theory Contributor: Běhounek, Libor; Daňková, Martina imprint: Elsevier BV, 2009 Published in: Fuzzy Sets and Systems Language: English DOI: 10.1016/j.fss.2008.06.013 ISSN: 0165-0114 Origination: Footnote: