%0 Journal Article %T A generalization of £¿iri£¿ fixed point theorem %A Nguyen Van Dung %A Poom Kumam %A Kanokwan Sitthithakerngkiet %J Mathematics %D 2013 %I arXiv %X In this paper, we state and prove a generalization of \'Ciri\'c fixed point theorems in metric space by using a new generalized quasi-contractive map. These theorems extend other well known fundamental metrical fixed point theorems in the literature. Moreover, a multi-valued version for generalized quasi-contraction is also established. %U http://arxiv.org/abs/1309.5589v3