AbbasM., ParvanehV. and RazaniA. (2011) “A common fixed point for generalized (ψ, φ)<sub><i>f,g</i></sub&gt; - weak contractions”, Ukrains’kyi Matematychnyi Zhurnal, 63(11), pp. 1544-1554. Available at: https://umj.imath.kiev.ua/index.php/umj/article/view/2824 (Accessed: 27July2024).