1. M. Aamri, D. El. Moutawakil, Some new common fixed point theorems under strict contractive conditions. J. Math. Anal. Appl. 270, 181–188 (2002)
2. M. Abbas, M.A. Khan, S. Radenovic, Common coupled fixed point theorems in cone metric spaces for w-compatible mappings. Appl. Math. Comput. 217, 195–202 (2010)
3. H. Adibi, Y.J. Cho, D. O’Regan, R. Saadati, Common fixed point theorems in ℒ $$\mathcal {L}$$ -fuzzy metric spaces. Appl. Math. Comput. 182, 820–828 (2006)
4. C. Alaca, D. Turkoglu, C. Yildiz, Fixed points in intuitionistic fuzzy metric spaces. Chaos Solitons Fractals 29, 1073–1079 (2006)
5. V. Berinde, M. Borcut, Tripled fixed point theorems for contractive type mappings in partially ordered metric spaces. Nonlinear Anal. 74, 4889–4897 (2011)