S. Djebali and K. Mebarki, “Systems of φ-Laplacian three-point boundary-value problems on the positive half-line”, Ukr. Mat. Zhurn., vol. 67, no. 12, pp. 1626–1648, Dec. 2015, Accessed: Apr. 13, 2025. [Online]. Available: https://umj.imath.kiev.ua/index.php/umj/article/view/2096