K.R. Balasubramanian, and V. Raja. “Interval-Valued Intuitionistic Fuzzy K-Ideal in Semi-Rings”. Malaya Journal of Matematik 6, no. 04 (October 1, 2018): 751–756. Accessed November 23, 2024. https://www.malayajournal.org/index.php/mjm/article/view/922.