K. Ravi, R. Murali, and A. Antony Raj. “Hyers-Ulam-Rassias Stability of Nth Order Linear Ordinary Differential Equations With Initial Conditions”. Malaya Journal of Matematik 4, no. 02 (April 1, 2016): 224–229. Accessed July 16, 2024. https://www.malayajournal.org/index.php/mjm/article/view/530.