%0 Journal Article
%T Quadruple Fixed Point Theorems for Weak  -Contractions
%A Erdal Karap&#305
%A nar
%J ISRN Mathematical Analysis
%D 2011
%I Hindawi Publishing Corporation
%R 10.5402/2011/989423
%U http://dx.doi.org/10.5402/2011/989423