A Fast Chebyshev Spectral Collocation Method for a Coupled System of Nonlinear Klein–Gordon Equations with Caputo Fractional Memory. - Kazez, Yertay; Abdiramanov, Zhanars A.; Adil, Nauryzbay; Berdyshev, Abdumauvlen S. (Axioms (2075-1680), 2026)