Bapurao C. Dhage, Namdev S. Jadhav, & 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), 133–141. Retrieved from https://ijmaa.in/index.php/ijmaa/article/view/335