K.T. Divya Mol, and Lovelymol Sebastian. “$\sigma$-Algebra of Complex Fuzzy Subgroups Associated With a Finite Group and the Measure on the $\sigma$-Algebra”. Malaya Journal of Matematik 9, no. 01 (January 1, 2021): 1176–1180. Accessed July 16, 2024. https://www.malayajournal.org/index.php/mjm/article/view/1244.