Qiyas, Muhammad; Abdullah, Saleem Sine trigonometric spherical fuzzy aggregation operators and their application in decision support system, TOPSIS, VIKOR. (English) Zbl 1467.91036 Korean J. Math. 29, No. 1, 137-167 (2021). MSC: 91B06 91B86 90B50 PDFBibTeX XMLCite \textit{M. Qiyas} and \textit{S. Abdullah}, Korean J. Math. 29, No. 1, 137--167 (2021; Zbl 1467.91036) Full Text: DOI
Ashraf, Shahzaib; Abdullah, Saleem; Mahmood, Tahir Aggregation operators of cubic picture fuzzy quantities and their application in decision support systems. (English) Zbl 1443.91105 Korean J. Math. 28, No. 2, 343-359 (2020). MSC: 91B06 91B86 PDFBibTeX XMLCite \textit{S. Ashraf} et al., Korean J. Math. 28, No. 2, 343--359 (2020; Zbl 1443.91105) Full Text: DOI