%0 Journal Article %T General Viscosity Approximation Methods for Common Fixed Points of Nonexpansive Semigroups in Hilbert Spaces %A Xue-song Li %A Nan-jing Huang %A Jong Kyu Kim %J Fixed Point Theory and Applications %D 2011 %I Springer %R 10.1155/2011/783502 %U http://dx.doi.org/10.1155/2011/783502