Abed, Salwa Salman, and Hiba Adel Jabbar. “Two Theorems in General Metric Space With 𝛒-Distance”. JOURNAL OF ADVANCES IN MATHEMATICS 12, no. 12 (January 28, 2017): 6852–6862. Accessed April 29, 2024. https://rajpub.com/index.php/jam/article/view/4441.