Mohamad Ilham Dwi F, et al. “Konvergensi Barisan Dan Kelengkapan Pada Ruang Metrik Parsial Rectangular”. Limits: Journal of Mathematics and Its Applications, vol. 20, no. 1, Mar. 2023, pp. 1-10, https://journal.its.ac.id/index.php/limits/article/view/5432.