Grouping of Books Type Based by Time Borrowing (months) Using Fuzzy C-Means Algorithm. (case Study: Surabaya Public Library). J. Electr. Eng. Comput. Sci. [Internet]. 2017 Jun. 30 [cited 2026 Mar. 16];2(1):239-46. Available from: https://ejournal.ubhara.ac.id/index.php/jeecs/article/view/168