Cutello, VincenzoMontero De Juan, Francisco JavierRuan, DaD'hondt, PierreGovaerts, PaulKerre, Etienne E.2023-06-202023-06-201996981-02-2738-8https://hdl.handle.net/20.500.14352/60918Proceedings of the 2nd International FLINS Workshop, Mol, Belgium, September 25-27, 1996engThe problem of defining non deterministic aggregation operatorsbook partopen access510.6Lógica simbólica y matemática (Matemáticas)1102.14 Lógica Simbólica