Existence results for a coupled system of $ (k, φ) $-Hilfer fractional differential equations with nonlocal integro-multi-point boundary conditions - Kamsrisuk, Nattapong; Ntouyas, Sotiris K.; Ahmad, Bashir; Samadi, Ayub; Tariboon, Jessada (AIMS mathematics, 2023)
Keywords: (k，φ)-hilfer fractional derivative; caputo fractional derivative; existence; fixed point theorems; riemann-liouville fractional derivative; uniqueness