Ünver, Mehmet, et al. “Cosine and Cotangent Similarity Measures Based on Choquet Integral for Spherical Fuzzy Sets and Applications to Pattern Recognition”. Journal of Computational and Cognitive Engineering, vol. 1, no. 1, Jan. 2022, pp. 21-31, https://doi.org/10.47852/bonviewJCCE2022010105.