Two energy-conserving HDG discretizations for the nonlinear Klein-Gordon equation are analyzed, with h^{k+1} error estimates, h^{k+2} superconvergent postprocessing, and second-order time discretization.
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On Two Conservative HDG Schemes for Nonlinear Klein-Gordon Equation
Two energy-conserving HDG discretizations for the nonlinear Klein-Gordon equation are analyzed, with h^{k+1} error estimates, h^{k+2} superconvergent postprocessing, and second-order time discretization.