Huda M, Lestari V. HOW MANY SUBSETS WHICH THEIR OPERATIONS WITH A FIXED SUBSET CONTAIN AT LEAST ONE ELEMENT OF A GIVEN COLLECTION?. BAREKENG: J. Math. & App. [Internet]. 11Oct.2024 [cited 28Oct.2024];18(4):2543-54. Available from: https://ojs3.unpatti.ac.id/index.php/barekeng/article/view/13070