Siti Khabibah, and Dita Anies Munawwaroh. “ewarnaan otal ada raf intang ierpinski”. Limits: Journal of Mathematics and Its Applications 18, no. 2 (November 15, 2022): 119–128. ccessed December 6, 2025. https://journal.its.ac.id/index.php/limits/article/view/5229.