Soleimani, Hossein; Vaezpour, S. Mansour; Asadi, Mehdi; Sims, Brailey Fixed point and endpoints theorems for set-valued contraction maps in cone metric spaces. (English) Zbl 1336.54055 J. Nonlinear Convex Anal. 16, No. 12, 2499-2505 (2015). MSC: 54H25 54C60 54E40 PDFBibTeX XMLCite \textit{H. Soleimani} et al., J. Nonlinear Convex Anal. 16, No. 12, 2499--2505 (2015; Zbl 1336.54055) Full Text: Link
Lin, Ing-Jer; Chen, Chi-Ming; Jovanović, Mirko; Wu, Tzi-Huei Fixed points and endpoints of set-valued contractions in cone metric spaces. (English) Zbl 1246.54047 Abstr. Appl. Anal. 2012, Article ID 632628, 14 p. (2012). MSC: 54H25 PDFBibTeX XMLCite \textit{I.-J. Lin} et al., Abstr. Appl. Anal. 2012, Article ID 632628, 14 p. (2012; Zbl 1246.54047) Full Text: DOI
Kadelburg, Zoran; Radenović, Stojan Some results on set-valued contractions in abstract metric spaces. (English) Zbl 1228.54041 Comput. Math. Appl. 62, No. 1, 342-350 (2011). MSC: 54H25 54C60 47H04 47H09 47H10 65J15 PDFBibTeX XMLCite \textit{Z. Kadelburg} and \textit{S. Radenović}, Comput. Math. Appl. 62, No. 1, 342--350 (2011; Zbl 1228.54041) Full Text: DOI