Ortíz Álvarez, H H, F N Jiménez García, and Abel Enrique Posso Agudelo. “Some Exact Solutions for a Klein Gordon Equation”. Ingeniería y Ciencia 8, no. 16 (November 30, 2012): 57–70. Accessed January 23, 2026. https://publicaciones.eafit.edu.co/index.php/ingciencia/article/view/1706.