NANWARE, J. A.; GADSING, M. N. 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), [S. l.], v. 13, n. 2, p. 61–73, 2024. Disponível em: https://ph03.tci-thaijo.org/index.php/jnao/article/view/2737. Acesso em: 2 sep. 2026.