Media type: E-Article Title: Missing values and dragonfly operations in fuzzy relational compositions Contributor: Štěpnička, Martin; Cao, Nhung; Běhounek, Libor; Burda, Michal; Dolný, Aleš imprint: Elsevier BV, 2019 Published in: International Journal of Approximate Reasoning Language: English DOI: 10.1016/j.ijar.2019.07.004 ISSN: 0888-613X Origination: Footnote: Access State: Open Access