Nanware, J. A., and M. N. Gadsing. “SOLUTIONS OF HIGHER ORDER SINGULAR NONLINEAR (l-1,1) CONJUGATE-TYPE FRACTIONAL DIFFERENTIAL EQUATIONS WITH LOWER-UPPER SOLUTION”. Journal of Nonlinear Analysis and Optimization: Theory & Applications (JNAO) 13, no. 2 (April 22, 2024): 61–73. accessed September 2, 2026. https://ph03.tci-thaijo.org/index.php/jnao/article/view/2737.