Mas’ud, Syamsuddin. “Tinjauan Teorema Titik Tetap Pada Beberapa Kontraksi Tipe Chatterjea Di Ruang Metrik Klasik”. Journal of Mathematics, Statistics, and Mathematics Education, vol. 2, no. 1, June 2026, pp. 67-75, https://journal.ininnawaparaedu.com/jmsme/article/view/799.