[1] M. Abbas, A.R. Khan and T. Nazir, Coupled common fixed point results in two generalized metric spaces. Applied Mathematics and Computation, 217(13):6328–6336, 2011.
[2] M. Abbas, M.A. Khan and S. Radenović, Common coupled fixed point theorem in cone metric space for w-compatible mappings. Applied Mathematics and Computation, 217:195–202, 2010.
[3] M. Abbas, T. Nazir and S. Radenović, Some periodic point results in generalized metric spaces. Applied Mathematics and Computation, 217(8):4094–4099, 2010.
[4] M. Abbas and B.E. Rhoades, Common fixed point results for noncommuting mappings without continuity in generalised metric spaces. Applied Mathematics and Computation, 215:262–269, 2009.
[5] T.G. Bhaskar and V. Lakshmikantham, Fixed point theorems in partially ordered metric spaces and applications. Nonlinear Analysis, 65:1379–1393, 2006.
[6] M.F. Bota, A. Petruşel, G. Petruşel and B. Samet, Coupled fixed point theorems for single-valued operators in b-metric spaces. Fixed Point Theory and Applications, 2015(1): Article ID 231, 2015.
[7] B.S. Choudhury and A. Kundu, A coupled coincidence point result in partially ordered metric spaces for compatible mappings. Nonlinear Analysis, 73:2524–2531, 2010.
[8] B.S. Choudhury and P. Maity, Coupled fixed point results ingeneralized metric spaces. Mathematical and Computer Modelling, 54(1-2):73–79, 2011.
[9] R. Chugh, T. Kadian, A. Rani and B.E. Rhoades, Property P in G-metric spaces. Fixed Point Theory and Applications, 2010: 401684, 2010.
[10] Lj. Ćirić, D. Mihet and R. Saadati, Monotone generalized contractions in partially ordered probabilistic metric spaces. Topology and its Applications, 156(17):2838–2844, 2009.
[11] S. Dalal and S. Chauhan, Coupled fixed points results for W-Compatible Maps in symmetric G-Metric spaces. Functional Analysis, Approximation and Computation, 7(1):39–46, 2018.
[12] D. Dorić, Z. Kadelburg and S. Radenović, Coupled fixed point results for mappings without mixed monotone property. Applied Mathematics Letters, 25(11):1803-1808, 2012.
[13] B. Hazarika, R. Arab and P. Kumam, Coupled fixed point theorems in partially ordered metric spaces via mixed g-monotone property. Journal of Fixed Point Theory and Applications, 21(1): 2019.
[14] V. Lakshmikantham and Lj. Ćirić, Coupled fixed point theorems for nonlinear contractions in partially ordered metric spaces. Nonlinear Analysis, 70:4341–4349, 2009.
[15] S. Moradi, E. A. Adegani and D. Alimohammadi, Common fixed point theorems for maps under a new contractive condition. International Journal of Nonlinear Analysis and Applications, 4(2):15–25, 2013.
[16] S. Moradi, Z. Fathi and E. A. Adegani, The common fixed point of single-valued generalized φf -weakly contractive mappings. Applied Mathematics Letters, 24(5): 771–776, 2011.
[17] Z. Mustafa, H. Obiedat and F. Awawdeh, Some of fixed point theorem for mapping on complete G-metric spaces. Fixed Point Theory and Applications, 2008: Article ID 189870, 2008.
[18] Z. Mustafa, W. Shatanawi and M. Bataineh, Fixed point theorems on uncomplete G-metric spaces. Journal of Mathematics and Statistics, 4(4): 196–201, 2008.
[19] Z. Mustafa, W. Shatanawi and M. Bataineh, Existence of fixed point result in G-metric spaces. International Journal of Mathematics and Mathematical Sciences, 2009: Article ID 283028, 2009.
[20] Z. Mustafa and B. Sims, Some remarks concerning D-metric spaces, in: Proceedings of the International Conference on Fixed Point Theory and Applications, Yokohama, Japan, 189–98, 2004.
[21] Z. Mustafa and B. Sims, A new approach to generalized metric spaces. Journal of Nonlinear and Convex Analysis, 7(2):289–297, 2006.
[22] Z. Mustafa and B. Sims, Fixed point theorems for contractive mappings in complete G-metric space. Fixed Point Theory and Applications, 2009: Article ID 917175, 2009.
[23] A. Petruşel, G. Petruşel, B. Samet and J.-C. Yao, Coupled fixed point theorems for symmetric contractions in b-metric spaces with applications to operator equation systems. Fixed Point Theory, 17(2):457–476, 2016.
[24] A. Petruşel, G. Petruşel and J.-C. Yao, Coupled fixed point theorems in quasimetric spaces without mixed monotonicity. Carpathian Journal of Mathematics, 35(2):185–192, 2019.
[25] R. Saadati, S.M. Vaezpour, P. Vetro and B.E. Rhoades, Fixed point theorems in generalized partially ordered G-metric spaces. Mathematical and Computer Modelling, 52:797–801, 2010.
[26] B. Samet, Coupled fixed point theorems for a generalized Meir-Keeler contraction in partially ordered metric spaces. Nonlinear Analysis, 72:4508–4517, 2010.
[27] B. Samet and C. Vetro, Coupled fixed point, F-invariant set and fixed point of N-order. Annals of Functional Analysis, 1(2):46–56, 2010.
[28] B. Samet and H. Yazidi, Coupled fixed point theorems in partially ordered ϵ-chainable metric spaces. Journal of Mathematics and Computer Science, 1(3):142–151, 2010.
[29] W. Shatanawi, Partially ordered cone metric spaces and coupled fixed point results. Computers and Mathematics with Applications, 60:2508–2515, 2010.
[30] M. Shoaib, M. Sarwar and T. Abdeljawad, Hybrid coupled fixed point theorems in metric spaces with applications. Journal of Function Spaces, 2019: Article ID 6870308, 2019.
[31] G. Wang, C. Zhu and Z. Wu, Some new coupled fixed point theorems in partially ordered complete Menger probabilistic G-metric spaces. Journal of Computational Analysis and Applications, 27(2): 2019.