On Asymptotic Stability on a Center Hypersurface at the Soliton for Even Solutions of the Nonlinear Klein-Gordon Equation When ( boldsymbol{2 ge p gt frac{5}{3}} ). - Scipio Cuccagna; Masaya Maeda; Federico Murgante; Stefano Scrobogna (SIAM J. Math. Anal., 2024)