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[1] A. Amimi, M. Fakhar, J. Zafarni, KKM mappings in metric spaces, Nonlinear Analysis, 60(2005), 1045-1052. [2] T. H. Chang, C. L. Yen, KKM property and fixed point theorems, J. Math. Ann. Appl, 203(1996), 224-235. [3] Ky Fan, A generalization of Tychonoff's fixed point theorem, Math. Ann, 142(1961), 305-310. [4] B. Knaster, C. Kuratowski, S. Mazurkiewicz, Ein Beweis des Fixpunksatzes fur n-dimensionale Simplexe, Fund. Math, 14(1929), 132-137. [5] M. A. Khamsi, KKM and Ky Fan theorems in hyperconvex spaces, J. Math. Ann. Appl, 204(1996), 298-306. [6] R. Nussbaum. The fixed point index and fixed point theorems for k-set contractions, Doctoral Dissertation, University of Chicago (1969).
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