Jiyong Li Xianfen Wang Qianyu Chen Shuo Deng Improved uniform error bounds of a Lawson-type exponential wave integrator method for the Klein-Gordon-Dirac equation. 128877 2024 479 Appl. Math. Comput. https://doi.org/10.1016/j.amc.2024.128877 db/journals/amc/amc479.html#LiWCD24