Huaijun Yang Convergence and superconvergence analysis of energy-preserving Crank-Nicolson Galerkin method for the Benjamin-Bona-Mahony equation. 1212-1227 2023 June 100 Int. J. Comput. Math. 6 https://doi.org/10.1080/00207160.2023.2175176 db/journals/ijcm/ijcm100.html#Yang23