Encinas AHH, Martín-Vaquero J, Queiruga-Dios A, Gayoso-Martínez V. Efficient high-order finite difference methods for nonlinear Klein–Gordon equations. I: Variants of the phi-four model and the form-I of the nonlinear Klein–Gordon equation. NAMC [Internet]. 2015 Apr. 20 [cited 2024 Apr. 27];20(2):274-90. Available from: https://www.journals.vu.lt/nonlinear-analysis/article/view/13539