Castaño–Bedoya, Jorge I., Orlando García–Jaimes, and José A. Sánchez–Cano. “Approximated Solution of Differentials Mixed Systems”. Ingeniería y Ciencia 5, no. 10 (December 1, 2009): 171–182. Accessed April 26, 2024. https://publicaciones.eafit.edu.co/index.php/ingciencia/article/view/61.