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    • Spherical fuzzy sets and spherical fuzzy TOPSIS method 

      Kutlu Gündoğdu, Fatma; Cengiz, Kahraman (Journal of Intelligent Fuzzy Systems, 2019)
      All the extensions of ordinary fuzzy sets with three dimensional membership functions such as intuitionistic fuzzy sets (IFS), intuitionistic fuzzy sets of second type (IFS2), and neutrosophic fuzzy sets (NFS) aim at ...