Balogun, F., and D. Singh. “SOME CHARACTERIZATIONS FOR THE DIMENSION OF ORDERED MULTISETS”. FUDMA JOURNAL OF SCIENCES 1, no. 1 (March 12, 2023): 84 - 87. Accessed April 4, 2025. https://fjs.fudutsinma.edu.ng/index.php/fjs/article/view/1225.