@ARTICLE{
author={Alnafei Shahrazad H,Radenovic Stojan N,Shahzad Naseer},
year={2011},
title={Fixed point theorems for mappings with convex diminishing diameters on cone metric spaces},
journal={APPLIED MATHEMATICS LETTERS},
volume={24},
number={12},
pages={2162-2166},
document_type={Article},
} 

@ARTICLE{
author={Alghamdi Mohammed Ali,Alnafei Shahrazad H,Radenovic Stojan N,Shahzad Naseer},
year={2011},
title={Fixed point theorems for convex contraction mappings on cone metric spaces},
journal={MATHEMATICAL AND COMPUTER MODELLING},
volume={54},
number={9-10},
pages={2020-2026},
document_type={Article},
}