Yousafzai, F., Zia, M.D., Lee, Y.-Y. and Khan, M.- ul-I. 2025. Applications of Intuitionistic Fuzzy Sets to Decision-Making Using AG-Groupoids and Klein Four-Group. Contemporary Mathematics . 6, 6 (Nov. 2025), 8509–8539. DOI:https://doi.org/10.37256/cm.6620258707.