Samadi, A., Ntouyas, S.K. and Tariboon, J. (2024) “On a (k;chi)-Hilfer fractional system with coupled nonlocal boundary conditions including various fractional derivatives and Riemann–Stieltjes integrals”, Nonlinear Analysis: Modelling and Control, pp. 426–448. doi:10.15388/namc.2024.29.34531.