Bapurao C. Dhage, Namdev S. Jadhav and Sidharth D. Sarkate (2018) “Differential Inequalities and Comparison Principles for Linearly Perturbed Differential Equations of First Type”, International Journal of Mathematics And its Applications, 6(4), pp. 133–141. Available at: https://ijmaa.in/index.php/ijmaa/article/view/335 (Accessed: 2 April 2026).