We introduce the notions of the function and function, and then we prove two common fixed point theorems in complete generalized metric spaces under contractive conditions with these two functions. Our results generalize or improve many recent common fixed point results in the literature.
"Common Fixed-Point Theorems in Complete Generalized Metric Spaces." J. Appl. Math. 2012 1 - 14, 2012. https://doi.org/10.1155/2012/945915