Retraction notice to "Hopf Bifurcation Stability in Hopfield Neural Networks" [Neural Networks 36 (2012) 51-58]

This article has been retracted: please see Elsevier Policy on Article Withdrawal (http://www.elsevier.com/locate/withdrawalpolicy). This article has been retracted at the request of the Editors in Chief as it contains unacceptable overlapwith earlier research published by R.L.Marichal, J.D. Pineiro, E.J. Gonzalez, and J. Torres in ‘‘Stability of Quasi-Periodic Orbits in Recurrent Neural Networks,’’ Neural Processing Letters Volume 31, Issue 3, Pages 269–281, June 2010. DOI http://dx.doi.org/10.1007/s11063-010-9138-9.