Akkouchi, Mohamed, and Valeriu Popa. “Altering Distances and Fixed Point Results for Tangential Hybrid Pairs of Mappings”. Annales Mathematicae Silesianae 26 (January 15, 2013): 25-41. Accessed May 20, 2024. https://journals.us.edu.pl/index.php/AMSIL/article/view/14011.