Kabare Gitesh, Santosh Shejal, “EXISTENCE SOLUTION FOR NONLINEAR FRACTIONAL DIFFERENTIAL EQUATION BY THE METHOD OF LOWER AND UPPER SOLUTION”, Int. j. innov. eng. res. technol., Jul. 2022, Accessed: Jan. 29, 2026. [Online]. Available: https://repo.ijiert.org/index.php/ijiert/article/view/3280