Show 10 5 10 15 20 50 100 250 Sort by year (new to old) Actions Download search results Subscribe to news feed Your filters: cql: author exact 79B4491C-B25E-11E6-B104-2D2FD0AF0289 or (type any "bookEditor journalEditor issueEdi... cql: keyword exact "subtraction" Add to list Journal Article A1 Generalized arithmetic operations in interval-valued fuzzy set theory Glad Deschrijver (UGent) and Annelies Vroman (2005) Journal of Intelligent and Fuzzy Systems. 16(4). p.265-271