HUSSEIN, Ahmed J. Differential Quadrature Method for solving the linear and nonlinear Klein - Gordon Equation. University of Thi-Qar Journal of Science, University of Thi-Qar, Thi-Qar, Iraq, v. 4, n. 3, p. 166–174, 2014. DOI: 10.32792/utq/utjsci/v4i3.649. Disponível em: https://jsci.utq.edu.iq/index.php/main/article/view/649.. Acesso em: 31 mar. 2025.