Sebastia Massanet, Susana Montes, Daniel Ruiz-Aguilera, Manuel González Hidalgo: Fuzzy Logic and Technology, and Aggregation Operators - 13th Conference of the European Society for Fuzzy Logic and Technology, EUSFLAT 2023, and 12th International Summer School on Aggregation Operators, AGOP 2023, Palma de Mallorca, Spain, September 4-8, 2023, Proceedings. Lecture Notes in Computer Science 14069, Springer 2023, ISBN 978-3-031-39964-0