Ullah, K., Mahmood, T., Jan, N., Broumi, S., & Khan, Q. (2018). On Bipolar-Valued Hesitant Fuzzy Sets and Their Applications in Multi-Attribute Decision Making. The Nucleus, 55(2), 93–101. Retrieved from http://www.thenucleuspak.org.pk/index.php/Nucleus/article/view/417