Summary: In the present work, a common fixed point theorem for self maps on cone metric spaces is proved. Also two examples, which show that our main theorem is a generalized version of the main theorems of [A. Branciari
, Int. J. Math. Math. Sci. 29, No. 9, 531–536 (2002; Zbl 0993.54040
)] and [L.-G. Huang
and X. Zhang
, J. Math. Anal. Appl. 332, No. 2, 1468–1476 (2007; Zbl 1118.54022
)] are given.